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stringdate 2020-01-01 00:00:00
2024-01-01 00:00:00
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2021
|
day1
|
Parks
|
parks
|
model_solution/model-solution.cpp
|
#include <iostream> // std::cout
#include <algorithm> // std::sort
#include <vector> // std::vector
#include "parks.h"
using namespace std;
vector<int> x, y;
vector<int> north, south, east, west;
vector<int> visited;
bool cmpx(int i, int j) {
if (x[i] == x[j])
return (y[i] < y[j]);
return (x[i] < x[j]);
}
bool cmpy(int i, int j) {
if (y[i] == y[j])
return (x[i] < x[j]);
return (y[i] < y[j]);
}
bool cmpsum(int i, int j) {
return (x[i]+y[i] > x[j] + y[j]);
}
// Disjoint set union
vector <int> parent;
void make_set(int v) {
parent[v] = v;
}
int find_set(int v) {
if (v == parent[v])
return v;
return find_set(parent[v]);
}
void union_sets(int a, int b) {
a = find_set(a);
b = find_set(b);
if (a != b)
parent[b] = a;
}
void RunDFS(int s) {
vector<int> stack;
// cout << s << visited[s] << " north: " << north[s] << " east: " << east[s] << " south: " << south[s] << " west: " << west[s] << endl;
stack.push_back(s);
while (stack.size() > 0) {
int t = stack.back();
stack.pop_back();
if (visited[t] != 1) {
visited[t]=1;
if(north[t] != -1) stack.push_back(north[t]);
if(west[t] != -1) stack.push_back(west[t]);
if(south[t] != -1) stack.push_back(south[t]);
if(east[t] != -1) stack.push_back(east[t]);
}
}
}
/*
void RunDFS(int s) {
if(visited[s] == 1) return;
visited[s]=1;
if(north[s] != -1) RunDFS(north[s]);
if(west[s] != -1) RunDFS(west[s]);
if(south[s] != -1) RunDFS(south[s]);
if(east[s] != -1) RunDFS(east[s]);
}
*/
// Edge set and tree set
std::vector<int> u, v, a, b;
void add_edge(int i, int j) {
u.push_back(i);
v.push_back(j);
union_sets(i, j);
// cout << "merge " << i << "," << j << endl;
if (((x[i]+y[i])/2) % 2 == 0) {
// insert tree on left
if (x[i] == x[j]) {
b.push_back( (y[i]+y[j])/2 );
if (y[j] > y[i]) {
a.push_back(x[i]-1);
} else {
a.push_back(x[i]+1);
}
} else {
a.push_back( (x[i]+x[j])/2 );
if (x[j] > x[i]) {
b.push_back(y[i]+1);
} else {
b.push_back(y[i]-1);
}
}
} else {
// insert tree on right
if (x[i] == x[j]) {
b.push_back( (y[i]+y[j])/2 );
if (y[j] > y[i]) {
a.push_back(x[i]+1);
} else {
a.push_back(x[i]-1);
}
} else {
a.push_back( (x[i]+x[j])/2 );
if (x[j] > x[i]) {
b.push_back(y[i]-1);
} else {
b.push_back(y[i]+1);
}
}
}
}
/*
void build(std::vector<int> u, std::vector<int> v, std::vector<int> a, std::vector<int> b) {
return 0;
}
*/
int construct_roads(std::vector<int> _x, std::vector<int> _y) {
x = _x;
y = _y;
std::vector<int> idx;
int n = x.size();
for(int i=0; i<n; i++) {
idx.push_back( i );
}
/*
cout << "The vector before applying sort is:\n" ;
for (int i=0; i<n; i++) {
cout << idx[i] << ": " << x[idx[i]] << " " << y[idx[i]] << endl;
}
*/
for (int i=0; i<n; i++) {
north.push_back(-1);
south.push_back(-1);
east.push_back(-1);
west.push_back(-1);
}
// Assign north & south
std::sort(idx.begin(), idx.end(), cmpx);
for (int i=0; i<n-1; i++) {
if (x[idx[i]]==x[idx[i+1]] && y[idx[i]]+2 == y[idx[i+1]]) {
north[idx[i]] = idx[i+1];
south[idx[i+1]] = idx[i];
}
}
// Assign east & west
std::sort(idx.begin(), idx.end(), cmpy);
for (int i=0; i<n-1; i++) {
if (y[idx[i]]==y[idx[i+1]] && x[idx[i]]+2 == x[idx[i+1]]) {
east[idx[i]] = idx[i+1];
west[idx[i+1]] = idx[i];
}
}
// cout << "Finish assigning directions\n";
for(int i=0; i<n; i++) {
visited.push_back(-1);
}
RunDFS(0);
bool connected = true;
for(int i=0; i<n; i++) {
if (visited[i] == -1) {
connected = false;
break;
}
}
if (connected == false) {
// cout << "It is not connected" << endl;
return 0;
}
// cout << "It is connected" << endl;
// Initialize the disjoint set
for(int i=0; i<n; i++) {
parent.push_back( i );
}
std::sort(idx.begin(), idx.end(), cmpsum);
/*
cout << "The vector after applying sort is:\n" ;
for (int i=0; i<n; i++) {
cout << idx[i] << ": north: " << north[idx[i]] << " south: " << south[idx[i]] << " east: " << east[idx[i]] << " west: " << west[idx[i]] << endl;
}
*/
for (int i=0; i<n; i++) {
// cout << idx[i] << ": north: " << north[idx[i]] << " south: " << south[idx[i]] << " east: " << east[idx[i]] << " west: " << west[idx[i]] << endl;
if (east[idx[i]] == -1 && north[idx[i]] == -1) {
// cout << "No east and north!" << endl;
continue;
} else if (east[idx[i]] != -1 && north[idx[i]] == -1) {
// Only east is neighbor
// cout << east[idx[i]] << "East only!" << endl;
add_edge(idx[i], east[idx[i]]);
continue;
} else if (east[idx[i]] == -1 && north[idx[i]] != -1) {
// Only north is neighbor
// cout << north[idx[i]] << "North only!" << endl;
add_edge(idx[i], north[idx[i]]);
continue;
}
// Both east and north are neighbors
if (find_set(east[idx[i]]) == find_set(north[idx[i]])) {
// cout << east[idx[i]] << "," << north[idx[i]] << "Each and North in the same component!" << endl;
// east and north are in the same component. So, they are connected.
if ( ((x[idx[i]]+y[idx[i]])/2) % 2 == 0 )
add_edge(idx[i], north[idx[i]]);
else
add_edge(idx[i], east[idx[i]]);
} else {
// cout << east[idx[i]] << "," << north[idx[i]] << "Each and North in different component!" << endl;
// east and north are in different component. So, they are not connected.
add_edge(idx[i], east[idx[i]]);
add_edge(idx[i], north[idx[i]]);
}
}
build(u, v, a, b);
return 1;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Output is correct\n\n",
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day1
|
Parks
|
parks
|
correct/full-prabowo.cpp
|
#include "parks.h"
#include <algorithm>
#include <queue>
#include <vector>
const int kMax = 200005;
std::vector<std::pair<int, int>> fountains[kMax];
bool isConnected(std::vector<std::vector<int>> adj) {
int n = adj.size();
std::vector<bool> vis(n);
std::queue<int> q;
q.push(0); vis[0] = true;
while (!q.empty()) {
int u = q.front();
q.pop();
for (int v : adj[u]) {
if (vis[v]) continue;
vis[v] = true;
q.push(v);
}
}
return all_of(vis.begin(), vis.end(), [](bool visited) { return visited; });
}
int construct_roads(std::vector<int> x, std::vector<int> y) {
int n = x.size();
for (int i = 0; i < n; ++i) {
fountains[x[i]].emplace_back(y[i], i);
}
for (int i = 0; i < kMax; ++i) {
std::sort(fountains[i].begin(), fountains[i].end());
}
std::vector<std::tuple<int, int, int, int, int>> pathways;
std::vector<std::vector<int>> adj(n);
for (int i = 0; i < n; ++i) {
auto it = std::lower_bound(fountains[x[i] + 2].begin(), fountains[x[i] + 2].end(),
std::make_pair(y[i], -1));
if (it != fountains[x[i] + 2].end() && it->first == y[i]) {
int ny = x[i] + y[i] & 2 ? y[i] + 1 : y[i] - 1;
pathways.emplace_back(x[i] + 1, ny, x[i] + y[i], i, it->second);
adj[i].emplace_back(it->second);
adj[it->second].emplace_back(i);
}
it = std::lower_bound(fountains[x[i]].begin(), fountains[x[i]].end(),
std::make_pair(y[i] + 2, -1));
if (it != fountains[x[i]].end() && it->first == y[i] + 2) {
int nx = x[i] + y[i] & 2 ? x[i] - 1 : x[i] + 1;
pathways.emplace_back(nx, y[i] + 1, x[i] + y[i], i, it->second);
adj[i].emplace_back(it->second);
adj[it->second].emplace_back(i);
}
}
if (!isConnected(adj)) return 0;
std::sort(pathways.begin(), pathways.end());
std::vector<int> u, v, a, b;
for (int i = 0; i < static_cast<int>(pathways.size()); ++i) {
if (i > 0 && std::get<0>(pathways[i]) == std::get<0>(pathways[i - 1]) &&
std::get<1>(pathways[i]) == std::get<1>(pathways[i - 1])) {
continue;
}
u.emplace_back(std::get<3>(pathways[i]));
v.emplace_back(std::get<4>(pathways[i]));
a.emplace_back(std::get<0>(pathways[i]));
b.emplace_back(std::get<1>(pathways[i]));
}
build(u, v, a, b);
return 1;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Output is correct\n\n",
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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2021
|
day1
|
Parks
|
parks
|
correct/full-chessboard-hash-1dim-kian.cpp
|
/**
* Task: parks
* Author: Kian Mirjalali
* Solution: Correct solution based on chessboard coloring of cells (trees)
* Time: O(n) on average
* It uses a hash map for each x to find the index of a vertex by its coordinate.
*/
#include "parks.h"
#include <iostream>
#include <algorithm>
#include <complex>
#include <unordered_map>
using namespace std;
#define tpc(C) template<class C>
#define allOf(c) ((c).begin()), ((c).end())
#define fori(i, a, b) for (int i = (a); i < int(b); i++)
#define forn(i, n) fori(i, 0, (n))
#define dbg(x) #x << "=" << (x)
#define show(x) cerr << dbg(x) << endl
tpc(C) inline int sz(const C& c) { return c.size(); }
typedef vector<int> VI;
typedef complex<int> Point;
#define X real()
#define Y imag()
/////////////////////////
const Point MOVES[] = {
{-2, 0},
{+2, 0},
{0, -2},
{0, +2},
};
const int LEFT = 0;
const int RIGHT = 1;
const int UP = 3;
/////////////////////////
class Point2Index {
int _min_x, _max_x;
typedef unordered_map<int, int> Y2i;
vector<Y2i> p2i;
inline void check_x_validity(int x) const {
if (x < _min_x || _max_x < x) {
cerr << "invalid x " << x << endl;
exit(10);
}
}
inline Y2i& get_y2i(int x) {
check_x_validity(x);
return p2i[x-_min_x];
}
inline const Y2i& get_y2i(int x) const {
check_x_validity(x);
return p2i[x-_min_x];
}
public:
inline Point2Index(int min_x, int max_x): _min_x(min_x), _max_x(max_x), p2i(max_x-min_x+1) {
}
inline void put(const Point& p, int i) {
get_y2i(p.X)[p.Y] = i;
}
inline int get(const Point& p) const {
auto& y2i = get_y2i(p.X);
auto it = y2i.find(p.Y);
return (it == y2i.end()) ? -1 : it->second;
}
inline bool contains(const Point& p) const {
auto& y2i = get_y2i(p.X);
return y2i.find(p.Y) != y2i.end();
}
};
/////////////////////////
VI q, mark;
inline void enq(int x) {
if (mark[x])
return;
mark[x] = true;
q.push_back(x);
}
/////////////////////////
int construct_roads(VI x, VI y) {
int n = x.size();
vector<Point> vertex(n);
Point2Index v2i(*min_element(allOf(x))-2, *max_element(allOf(x))+2);
forn(i, n) {
vertex[i] = Point(x[i], y[i]);
v2i.put(vertex[i], i);
}
{// Check connectivity
q.clear();
q.reserve(n);
mark.assign(n, false);
enq(0);
for (int tail = 0; tail < sz(q); tail++) {
Point p = vertex[q[tail]];
for (auto& mov : MOVES) {
int nei = v2i.get(p+mov);
if (nei >= 0)
enq(nei);
}
}
if (sz(q) != n)
return 0;
}
VI u, v, a, b;
forn(i, n) {
Point pi = vertex[i];
bool is_white_cell = (((pi.X+pi.Y)&2) == 0);
{
Point pj = pi + MOVES[RIGHT];
int j = v2i.get(pj);
if ((j >= 0) && !(v2i.contains(pi+MOVES[UP]) && v2i.contains(pj+MOVES[UP]) && is_white_cell)) {
u.push_back(i);
v.push_back(j);
a.push_back(pi.X+1);
b.push_back(pi.Y+(is_white_cell?+1:-1));
}
}
{
Point pj = pi + MOVES[UP];
int j = v2i.get(pj);
if ((j >= 0) && !(v2i.contains(pi+MOVES[LEFT]) && v2i.contains(pj+MOVES[LEFT]) && is_white_cell)) {
u.push_back(i);
v.push_back(j);
a.push_back(pi.X+(is_white_cell?-1:+1));
b.push_back(pi.Y+1);
}
}
}
build(u, v, a, b);
return 1;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Output is correct\n\n",
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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2021
|
day1
|
Parks
|
parks
|
correct/full-chessboard-hash-boost-kian.cpp
|
/**
* Task: parks
* Author: Kian Mirjalali
* Solution: Correct solution based on chessboard coloring of cells (trees)
* Time: O(n) on average
* It uses a hash map to find the index of a vertex by its coordinate.
* The hash function is boost_hash_combine(hash(x), hash(y)) based on boost library.
*/
#include "parks.h"
#include <complex>
#include <unordered_map>
using namespace std;
#define tpc(C) template<class C>
#define allOf(c) ((c).begin()), ((c).end())
#define fori(i, a, b) for (int i = (a); i < int(b); i++)
#define forn(i, n) fori(i, 0, (n))
#define dbg(x) #x << "=" << (x)
#define show(x) cerr << dbg(x) << endl
tpc(C) inline int sz(const C& c) { return c.size(); }
typedef vector<int> VI;
typedef complex<int> Point;
#define X real()
#define Y imag()
/////////////////////////
const Point MOVES[] = {
{-2, 0},
{+2, 0},
{0, -2},
{0, +2},
};
const int LEFT = 0;
const int RIGHT = 1;
const int UP = 3;
/////////////////////////
inline size_t boost_hash_combine(size_t a, size_t b) {
return a ^ (b + 0x9e3779b9 + (a << 6) + (a >> 2));
}
struct PointHash {
inline size_t operator()(const Point &a) const {
auto h = hash<int>();
return boost_hash_combine(h(a.X), h(a.Y));
}
};
class Point2Index {
unordered_map<Point, int, PointHash> p2i;
public:
inline Point2Index() {
}
inline void put(const Point& p, int i) {
p2i[p] = i;
}
inline int get(const Point& p) const {
auto it = p2i.find(p);
return (it == p2i.end()) ? -1 : it->second;
}
inline bool contains(const Point& p) const {
return p2i.find(p) != p2i.end();
}
};
/////////////////////////
VI q, mark;
inline void enq(int x) {
if (mark[x])
return;
mark[x] = true;
q.push_back(x);
}
/////////////////////////
int construct_roads(VI x, VI y) {
int n = x.size();
vector<Point> vertex(n);
Point2Index v2i;
forn(i, n) {
vertex[i] = Point(x[i], y[i]);
v2i.put(vertex[i], i);
}
{// Check connectivity
q.clear();
q.reserve(n);
mark.assign(n, false);
enq(0);
for (int tail = 0; tail < sz(q); tail++) {
Point p = vertex[q[tail]];
for (auto& mov : MOVES) {
int nei = v2i.get(p+mov);
if (nei >= 0)
enq(nei);
}
}
if (sz(q) != n)
return 0;
}
VI u, v, a, b;
forn(i, n) {
Point pi = vertex[i];
bool is_white_cell = (((pi.X+pi.Y)&2) == 0);
{
Point pj = pi + MOVES[RIGHT];
int j = v2i.get(pj);
if ((j >= 0) && !(v2i.contains(pi+MOVES[UP]) && v2i.contains(pj+MOVES[UP]) && is_white_cell)) {
u.push_back(i);
v.push_back(j);
a.push_back(pi.X+1);
b.push_back(pi.Y+(is_white_cell?+1:-1));
}
}
{
Point pj = pi + MOVES[UP];
int j = v2i.get(pj);
if ((j >= 0) && !(v2i.contains(pi+MOVES[LEFT]) && v2i.contains(pj+MOVES[LEFT]) && is_white_cell)) {
u.push_back(i);
v.push_back(j);
a.push_back(pi.X+(is_white_cell?-1:+1));
b.push_back(pi.Y+1);
}
}
}
build(u, v, a, b);
return 1;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Output is correct\n\n",
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day1
|
Parks
|
parks
|
correct/full-chessboard-adj-kian.cpp
|
/**
* Task: parks
* Author: Kian Mirjalali
* Solution: Solution based on chessboard coloring of cells (trees)
* Time: O(n*log(n)+n) where n*log(n) is for just 2 sorts
* It computes and keeps the adjacent vertices for each vertex on each direction.
*/
#include "parks.h"
#include <complex>
#include <algorithm>
#include <iostream>
using namespace std;
#define tpc(C) template<class C>
#define allOf(c) ((c).begin()), ((c).end())
#define fori(i, a, b) for (int i = (a); i < int(b); i++)
#define forn(i, n) fori(i, 0, (n))
#define dbg(x) #x << "=" << (x)
#define show(x) cerr << dbg(x) << endl
#define cmpret(a, b) do { if ((a) != (b)) return ((a) < (b)); } while (false)
tpc(C) inline int sz(const C& c) { return c.size(); }
typedef vector<int> VI;
typedef complex<int> Point;
#define X real()
#define Y imag()
/////////////////////////
const vector<Point> MOVES = {
{-2, 0},
{+2, 0},
{0, -2},
{0, +2},
};
const int LEFT = 0;
const int RIGHT = 1;
const int DOWN = 2;
const int UP = 3;
/////////////////////////
vector<Point> vertex;
inline bool cmp_x_then_y(int i, int j) {
const Point& a = vertex[i];
const Point& b = vertex[j];
cmpret(a.X, b.X);
return a.Y < b.Y;
}
inline bool cmp_y_then_x(int i, int j) {
const Point& a = vertex[i];
const Point& b = vertex[j];
cmpret(a.Y, b.Y);
return a.X < b.X;
}
/////////////////////////
VI q, mark;
inline void enq(int x) {
if (mark[x])
return;
mark[x] = true;
q.push_back(x);
}
/////////////////////////
int construct_roads(VI x, VI y) {
int n = x.size();
vertex.resize(n);
forn(i, n)
vertex[i] = Point(x[i], y[i]);
vector<VI> adj(n, VI(sz(MOVES), -1));
{// Fill adj
VI index(n);
forn(i, n)
index[i] = i;
sort(allOf(index), cmp_x_then_y);
forn(t, n-1) {
int i = index[t];
int j = index[t+1];
if (vertex[i]+MOVES[UP] == vertex[j]) {
adj[i][UP] = j;
adj[j][DOWN] = i;
}
}
sort(allOf(index), cmp_y_then_x);
forn(t, n-1) {
int i = index[t];
int j = index[t+1];
if (vertex[i]+MOVES[RIGHT] == vertex[j]) {
adj[i][RIGHT] = j;
adj[j][LEFT] = i;
}
}
}
{// Check connectivity
q.clear();
q.reserve(n);
mark.assign(n, false);
enq(0);
for (int tail = 0; tail < sz(q); tail++)
for (int nei : adj[q[tail]])
if (nei >= 0)
enq(nei);
if (sz(q) != n)
return 0;
}
VI u, v, a, b;
forn(i, n) {
Point pi = vertex[i];
bool is_white_cell = (((pi.X+pi.Y)&2) == 0);
{
int j = adj[i][RIGHT];
if ((j >= 0) && !((adj[i][UP] >= 0) && (adj[j][UP] >= 0) && is_white_cell)) {
u.push_back(i);
v.push_back(j);
a.push_back(pi.X+1);
b.push_back(pi.Y+(is_white_cell?+1:-1));
}
}
{
int j = adj[i][UP];
if ((j >= 0) && !((adj[i][LEFT] >= 0) && (adj[j][LEFT] >= 0) && is_white_cell)) {
u.push_back(i);
v.push_back(j);
a.push_back(pi.X+(is_white_cell?-1:+1));
b.push_back(pi.Y+1);
}
}
}
build(u, v, a, b);
return 1;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Output is correct\n\n",
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Mutating DNA
|
dna
|
incorrect/wa-jonathanirvings.cpp
|
#include "dna.h"
#include <bits/stdc++.h>
using namespace std;
const string kDna = "ATC";
const int K = kDna.size();
vector<int> prefix_sum[sizeof(char) << 8][sizeof(char) << 8];
int cnt[sizeof(char) << 8][sizeof(char) << 8];
vector<string> dna_subsets;
constexpr int kImpossible = -1;
void init(string A, string B) {
int N = A.size();
for (int c1 : kDna) {
for (int c2 : kDna) {
prefix_sum[c1][c2].resize(N);
}
}
for (int c1 : kDna) {
for (int c2 : kDna) {
for (int i = 0; i < N; ++i) {
prefix_sum[c1][c2][i] = (c1 == A[i] && c2 == B[i]) ? 1 : 0;
if (i > 0) {
prefix_sum[c1][c2][i] += prefix_sum[c1][c2][i - 1];
}
}
}
}
for (int bit = 1; bit < (1 << K); ++bit) {
string dna_subset;
for (int i = 0; i < K; ++i) {
if (bit & (1 << i)) {
dna_subset += kDna[i];
}
}
dna_subsets.push_back(dna_subset);
}
sort(dna_subsets.begin(), dna_subsets.end(), [] (string a, string b) {
return a.size() < b.size();
});
}
int get_distance(int X, int Y) {
for (int c1 : kDna) {
for (int c2 : kDna) {
cnt[c1][c2] = prefix_sum[c1][c2][Y];
if (X > 0) {
cnt[c1][c2] -= prefix_sum[c1][c2][X - 1];
}
}
}
int answer = Y - X + 1;
for (string dna_subset : dna_subsets) {
for (int tries = 0; tries < 2; ++tries) {
int res = INT_MAX;
for (int i = 0; i < static_cast<int>(dna_subset.size()); ++i) {
int c1 = dna_subset[i];
int c2 = dna_subset[(i + 1) % dna_subset.size()];
res = min(res, cnt[c1][c2]);
}
answer -= res;
for (int i = 0; i < static_cast<int>(dna_subset.size()); ++i) {
int c1 = dna_subset[i];
int c2 = dna_subset[(i + 1) % dna_subset.size()];
cnt[c1][c2] -= res;
}
}
}
for (int c1 : kDna) {
for (int c2 : kDna) {
if (cnt[c1][c2] > 0) {
return kImpossible;
}
}
}
return answer;
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Mutating DNA
|
dna
|
correct/full-fenwick.cpp
|
#include <iostream>
#include <string>
#include <cassert>
using namespace std;
const int MAX = 5;
struct Matrix
{
int a[MAX][MAX];
Matrix()
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] = 0;
}
void add(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] += o.a[i][j];
}
void sub(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] -= o.a[i][j];
}
void show() const
{
for (int i=0;i<MAX;i++) {
for (int j=0;j<MAX;j++) {
cout << a[i][j] << " ";
}
cout << "\n";
}
}
int swapdistance() const
{
int mtot = 0;
int si[MAX], sj[MAX];
for (int i=0;i<MAX;i++)
si[i] = 0;
for (int j=0;j<MAX;j++)
sj[j] = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
{
mtot += a[i][j];
si[i] += a[i][j];
sj[j] += a[i][j];
}
for (int node=0;node<MAX;node++)
if (si[node] != sj[node])
return -1;
Matrix aux = *this;
int cycles = 0;
// 1-cycles
for (int i=0;i<MAX;i++)
{
cycles += aux.a[i][i];
aux.a[i][i] = 0;
}
// 2-cycles
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
{
int c = min(aux.a[i][j], aux.a[j][i]);
cycles += c;
aux.a[i][j] -= c;
aux.a[j][i] -= c;
}
// 3-cycles
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
for (int k=0;k<j;k++)
{
int c;
#define do3(i,j,k) c = min(aux.a[i][j], min(aux.a[j][k], aux.a[k][i])); cycles += c; aux.a[i][j] -= c; aux.a[j][k] -= c; aux.a[k][i] -= c;
do3(i,j,k);
do3(i,k,j);
}
// 4-cycles
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
for (int k=0;k<j;k++)
for (int l=0;l<k;l++)
{
int c;
#define do4(i,j,k,l) c = min(min(aux.a[i][j], aux.a[j][k]), min(aux.a[k][l], aux.a[l][i])); cycles += c; aux.a[i][j] -= c; aux.a[j][k] -= c; aux.a[k][l] -= c; aux.a[l][i] -= c;
do4(i,j,k,l);
do4(i,j,l,k);
do4(i,k,j,l);
do4(i,k,l,j);
do4(i,l,j,k);
do4(i,l,k,j);
}
// 5-cycles
int remainingEdges = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
remainingEdges += aux.a[i][j];
assert(remainingEdges % 5 == 0);
cycles += remainingEdges / 5;
return mtot - cycles;
}
};
const int MAXN = 250000;
Matrix fenwick[MAXN+1];
// logical fenwick array has indexes from 0 to MAXN-1, inclusive
// fenwickAdd(pos) adds the given value to index pos
// fenwickQuery(pos) returns the sum of range [0, pos)
void fenwickAdd(int pos, const Matrix &value)
{
assert(0 <= pos);
assert(pos < MAXN);
for (pos++; pos <= MAXN ; pos += pos&(-pos))
fenwick[pos].add(value);
}
Matrix fenwickQuery(int pos)
{
assert(0 <= pos);
assert(pos <= MAXN);
Matrix ret;
for (; pos > 0 ; pos -= pos&(-pos))
ret.add(fenwick[pos]);
return ret;
}
int charValues[256];
string globalA, globalB;
void init(string a, string b)
{
globalA = a;
globalB = b;
charValues['A'] = 0;
charValues['C'] = 1;
charValues['G'] = 2;
charValues['T'] = 3;
charValues['U'] = 4;
Matrix mat;
for (int i=0;i<int(a.size());i++)
{
int x = charValues[int(a[i])];
int y = charValues[int(b[i])];
mat.a[x][y] = 1;
fenwickAdd(i, mat);
mat.a[x][y] = 0;
}
}
void modify(int k, int i, char xChar)
{
Matrix mat;
int x = charValues[int(globalA[i])];
int y = charValues[int(globalB[i])];
mat.a[x][y] -= 1;
if (k == 0)
globalA[i] = xChar;
else
globalB[i] = xChar;
x = charValues[int(globalA[i])];
y = charValues[int(globalB[i])];
mat.a[x][y] += 1;
fenwickAdd(i, mat);
}
int get_distance(int i,int j)
{
Matrix mat = fenwickQuery(j+1);
mat.sub(fenwickQuery(i));
return mat.swapdistance();
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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],
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}
] |
2021
|
day2
|
Mutating DNA
|
dna
|
correct/at-no-prefix.cpp
|
#include <iostream>
#include <string>
#include <cassert>
using namespace std;
const int MAX = 4;
struct Matrix
{
int a[MAX][MAX];
Matrix()
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] = 0;
}
void add(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] += o.a[i][j];
}
void sub(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] -= o.a[i][j];
}
int swapdistance() const
{
int mtot = 0;
int si[MAX];
for (int i=0;i<MAX;i++)
si[i] = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
{
mtot += a[i][j];
si[i] += a[i][j];
si[j] -= a[i][j];
}
for (int node=0;node<MAX;node++)
if (si[node])
return -1;
Matrix aux = *this;
int cycles = 0;
for (int i=0;i<MAX;i++)
{
cycles += aux.a[i][i];
aux.a[i][i] = 0;
}
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
{
int c = min(aux.a[i][j], aux.a[j][i]);
cycles += c;
aux.a[i][j] -= c;
aux.a[j][i] -= c;
}
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
for (int k=0;k<j;k++)
{
int c;
c = min(aux.a[i][j], min(aux.a[j][k], aux.a[k][i])); cycles += c; aux.a[i][j] -= c; aux.a[j][k] -= c; aux.a[k][i] -= c;;
c = min(aux.a[i][k], min(aux.a[k][j], aux.a[j][i])); cycles += c; aux.a[i][k] -= c; aux.a[k][j] -= c; aux.a[j][i] -= c;;
}
int remainingEdges = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
remainingEdges += aux.a[i][j];
assert(remainingEdges % MAX == 0);
cycles += remainingEdges / MAX;
return mtot - cycles;
}
};
int charValues[256];
string globalA, globalB;
void init(string a, string b)
{
globalA = a;
globalB = b;
charValues['A'] = 0;
charValues['T'] = 1;
charValues['C'] = 2;
charValues['G'] = 3;
}
int get_distance(int i,int j)
{
Matrix mat;
for (int k = i; k <= j; k++) {
int x = charValues[int(globalA[k])];
int y = charValues[int(globalB[k])];
mat.a[x][y] += 1;
}
if (mat.a[0][1] != mat.a[1][0]) {
return -1;
} else {
return mat.a[0][1];
}
}
|
WA
| 0 | 0 | 0 |
[
0
] |
[
"WA"
] |
[
"Output isn't correct\n1st lines differ - on the 1st token, expected: '2', found: '-1'\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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],
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],
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] |
2021
|
day2
|
Mutating DNA
|
dna
|
correct/no-prefix.cpp
|
#include <iostream>
#include <string>
#include <cassert>
using namespace std;
const int MAX = 4;
struct Matrix
{
int a[MAX][MAX];
Matrix()
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] = 0;
}
void add(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] += o.a[i][j];
}
void sub(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] -= o.a[i][j];
}
int swapdistance() const
{
int mtot = 0;
int si[MAX];
for (int i=0;i<MAX;i++)
si[i] = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
{
mtot += a[i][j];
si[i] += a[i][j];
si[j] -= a[i][j];
}
for (int node=0;node<MAX;node++)
if (si[node])
return -1;
Matrix aux = *this;
int cycles = 0;
for (int i=0;i<MAX;i++)
{
cycles += aux.a[i][i];
aux.a[i][i] = 0;
}
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
{
int c = min(aux.a[i][j], aux.a[j][i]);
cycles += c;
aux.a[i][j] -= c;
aux.a[j][i] -= c;
}
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
for (int k=0;k<j;k++)
{
int c;
c = min(aux.a[i][j], min(aux.a[j][k], aux.a[k][i])); cycles += c; aux.a[i][j] -= c; aux.a[j][k] -= c; aux.a[k][i] -= c;;
c = min(aux.a[i][k], min(aux.a[k][j], aux.a[j][i])); cycles += c; aux.a[i][k] -= c; aux.a[k][j] -= c; aux.a[j][i] -= c;;
}
int remainingEdges = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
remainingEdges += aux.a[i][j];
assert(remainingEdges % MAX == 0);
cycles += remainingEdges / MAX;
return mtot - cycles;
}
};
int charValues[256];
string globalA, globalB;
void init(string a, string b)
{
globalA = a;
globalB = b;
charValues['A'] = 0;
charValues['T'] = 1;
charValues['C'] = 2;
charValues['G'] = 3;
}
int get_distance(int i,int j)
{
Matrix mat;
for (int k = i; k <= j; k++) {
int x = charValues[int(globalA[k])];
int y = charValues[int(globalB[k])];
mat.a[x][y] += 1;
}
return mat.swapdistance();
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Mutating DNA
|
dna
|
correct/full-jonathanirvings.cpp
|
#include "dna.h"
#include <bits/stdc++.h>
using namespace std;
const string kDna = "ACT";
const int K = kDna.size();
vector<int> prefix_sum[sizeof(char) << 8][sizeof(char) << 8];
int cnt[sizeof(char) << 8][sizeof(char) << 8];
vector<string> dna_subsets;
constexpr int kImpossible = -1;
void init(string A, string B) {
int N = A.size();
for (int c1 : kDna) {
for (int c2 : kDna) {
prefix_sum[c1][c2].resize(N);
}
}
for (int c1 : kDna) {
for (int c2 : kDna) {
for (int i = 0; i < N; ++i) {
prefix_sum[c1][c2][i] = (c1 == A[i] && c2 == B[i]) ? 1 : 0;
if (i > 0) {
prefix_sum[c1][c2][i] += prefix_sum[c1][c2][i - 1];
}
}
}
}
for (int bit = 1; bit < (1 << K); ++bit) {
string dna_subset;
for (int i = 0; i < K; ++i) {
if (bit & (1 << i)) {
dna_subset += kDna[i];
}
}
dna_subsets.push_back(dna_subset);
}
sort(dna_subsets.begin(), dna_subsets.end(), [] (string a, string b) {
return a.size() < b.size();
});
}
int get_distance(int X, int Y) {
for (int c1 : kDna) {
for (int c2 : kDna) {
cnt[c1][c2] = prefix_sum[c1][c2][Y];
if (X > 0) {
cnt[c1][c2] -= prefix_sum[c1][c2][X - 1];
}
}
}
int answer = Y - X + 1;
for (string dna_subset : dna_subsets) {
do {
int res = INT_MAX;
for (int i = 0; i < static_cast<int>(dna_subset.size()); ++i) {
int c1 = dna_subset[i];
int c2 = dna_subset[(i + 1) % dna_subset.size()];
res = min(res, cnt[c1][c2]);
}
answer -= res;
for (int i = 0; i < static_cast<int>(dna_subset.size()); ++i) {
int c1 = dna_subset[i];
int c2 = dna_subset[(i + 1) % dna_subset.size()];
cnt[c1][c2] -= res;
}
} while (next_permutation(dna_subset.begin(), dna_subset.end()));
}
for (int c1 : kDna) {
for (int c2 : kDna) {
if (cnt[c1][c2] > 0) {
return kImpossible;
}
}
}
return answer;
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2021
|
day2
|
Mutating DNA
|
dna
|
model_solution/full-prefix.cpp
|
#include <iostream>
#include <string>
#include <cassert>
using namespace std;
const int MAX = 4;
struct Matrix
{
int a[MAX][MAX];
Matrix()
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] = 0;
}
void add(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] += o.a[i][j];
}
void sub(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] -= o.a[i][j];
}
int swapdistance() const
{
int mtot = 0;
int si[MAX];
for (int i=0;i<MAX;i++)
si[i] = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
{
mtot += a[i][j];
si[i] += a[i][j];
si[j] -= a[i][j];
}
for (int node=0;node<MAX;node++)
if (si[node])
return -1;
Matrix aux = *this;
int cycles = 0;
for (int i=0;i<MAX;i++)
{
cycles += aux.a[i][i];
aux.a[i][i] = 0;
}
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
{
int c = min(aux.a[i][j], aux.a[j][i]);
cycles += c;
aux.a[i][j] -= c;
aux.a[j][i] -= c;
}
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
for (int k=0;k<j;k++)
{
int c;
c = min(aux.a[i][j], min(aux.a[j][k], aux.a[k][i])); cycles += c; aux.a[i][j] -= c; aux.a[j][k] -= c; aux.a[k][i] -= c;;
c = min(aux.a[i][k], min(aux.a[k][j], aux.a[j][i])); cycles += c; aux.a[i][k] -= c; aux.a[k][j] -= c; aux.a[j][i] -= c;;
}
int remainingEdges = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
remainingEdges += aux.a[i][j];
assert(remainingEdges % MAX == 0);
cycles += remainingEdges / MAX;
return mtot - cycles;
}
};
const int MAXN = 250000;
Matrix prefix[MAXN+1];
void prefixAdd(int pos, const Matrix &value) {
assert(0 <= pos);
assert(pos < MAXN);
pos++;
prefix[pos].add(prefix[pos-1]);
prefix[pos].add(value);
}
Matrix prefixQuery(int pos) {
assert(0 <= pos);
assert(pos <= MAXN);
Matrix ret;
ret.add(prefix[pos]);
return ret;
}
int charValues[256];
string globalA, globalB;
void init(string a, string b)
{
globalA = a;
globalB = b;
charValues['A'] = 0;
charValues['T'] = 1;
charValues['C'] = 2;
charValues['G'] = 3;
Matrix mat;
for (int i=0;i<int(a.size());i++)
{
int x = charValues[int(a[i])];
int y = charValues[int(b[i])];
mat.a[x][y] = 1;
prefixAdd(i, mat);
mat.a[x][y] = 0;
}
}
int get_distance(int i,int j)
{
Matrix mat = prefixQuery(j+1);
mat.sub(prefix[i]);
return mat.swapdistance();
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Mutating DNA
|
dna
|
correct/atc-prefix.cpp
|
#include <iostream>
#include <string>
#include <cassert>
using namespace std;
const int MAX = 4;
struct Matrix
{
int a[MAX][MAX];
Matrix()
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] = 0;
}
void add(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] += o.a[i][j];
}
void sub(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] -= o.a[i][j];
}
int swapdistance() const
{
int mtot = 0;
int si[MAX];
for (int i=0;i<MAX;i++)
si[i] = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
{
mtot += a[i][j];
si[i] += a[i][j];
si[j] -= a[i][j];
}
for (int node=0;node<MAX;node++)
if (si[node])
return -1;
Matrix aux = *this;
int cycles = 0;
for (int i=0;i<MAX;i++)
{
cycles += aux.a[i][i];
aux.a[i][i] = 0;
}
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
{
int c = min(aux.a[i][j], aux.a[j][i]);
cycles += c;
aux.a[i][j] -= c;
aux.a[j][i] -= c;
}
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
for (int k=0;k<j;k++)
{
int c;
c = min(aux.a[i][j], min(aux.a[j][k], aux.a[k][i])); cycles += c; aux.a[i][j] -= c; aux.a[j][k] -= c; aux.a[k][i] -= c;;
c = min(aux.a[i][k], min(aux.a[k][j], aux.a[j][i])); cycles += c; aux.a[i][k] -= c; aux.a[k][j] -= c; aux.a[j][i] -= c;;
}
int remainingEdges = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
remainingEdges += aux.a[i][j];
assert(remainingEdges % MAX == 0);
cycles += remainingEdges / MAX;
return mtot - cycles;
}
};
const int MAXN = 250000;
Matrix prefix[MAXN+1];
void prefixAdd(int pos, const Matrix &value) {
assert(0 <= pos);
assert(pos < MAXN);
pos++;
prefix[pos].add(prefix[pos-1]);
prefix[pos].add(value);
}
Matrix prefixQuery(int pos) {
assert(0 <= pos);
assert(pos <= MAXN);
Matrix ret;
ret.add(prefix[pos]);
return ret;
}
int charValues[256];
string globalA, globalB;
void init(string a, string b)
{
globalA = a;
globalB = b;
charValues['A'] = 0;
charValues['T'] = 1;
charValues['C'] = 2;
charValues['G'] = 3;
Matrix mat;
for (int i=0;i<int(a.size());i++)
{
int x = charValues[int(a[i])];
int y = charValues[int(b[i])];
mat.a[x][y] = 1;
prefixAdd(i, mat);
mat.a[x][y] = 0;
}
}
int get_distance(int p,int q)
{
Matrix mat = prefixQuery(q+1);
mat.sub(prefix[p]);
int swaps = 0;
for (int i = 0; i < 3; i++) {
for (int j = 0; j < i; j++) {
int c = min(mat.a[i][j], mat.a[j][i]);
swaps += c;
mat.a[i][j] -= c;
mat.a[j][i] -= c;
int k = 3 - i - j;
c = min(mat.a[i][j], mat.a[j][k]);
swaps += c;
mat.a[i][j] -= c;
mat.a[j][k] -= c;
mat.a[i][k] += c;
}
}
for (int i = 0; i < 3; i++) {
for (int j = 0; j < i; j++) {
if (mat.a[i][j] != 0 || mat.a[j][i] != 0) {
return -1;
}
}
}
return swaps;
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Mutating DNA
|
dna
|
incorrect/at-prefix.cpp
|
#include <iostream>
#include <string>
#include <cassert>
using namespace std;
const int MAX = 4;
struct Matrix
{
int a[MAX][MAX];
Matrix()
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] = 0;
}
void add(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] += o.a[i][j];
}
void sub(const Matrix &o)
{
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
a[i][j] -= o.a[i][j];
}
int swapdistance() const
{
int mtot = 0;
int si[MAX];
for (int i=0;i<MAX;i++)
si[i] = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
{
mtot += a[i][j];
si[i] += a[i][j];
si[j] -= a[i][j];
}
for (int node=0;node<MAX;node++)
if (si[node])
return -1;
Matrix aux = *this;
int cycles = 0;
for (int i=0;i<MAX;i++)
{
cycles += aux.a[i][i];
aux.a[i][i] = 0;
}
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
{
int c = min(aux.a[i][j], aux.a[j][i]);
cycles += c;
aux.a[i][j] -= c;
aux.a[j][i] -= c;
}
for (int i=0;i<MAX;i++)
for (int j=0;j<i;j++)
for (int k=0;k<j;k++)
{
int c;
c = min(aux.a[i][j], min(aux.a[j][k], aux.a[k][i])); cycles += c; aux.a[i][j] -= c; aux.a[j][k] -= c; aux.a[k][i] -= c;;
c = min(aux.a[i][k], min(aux.a[k][j], aux.a[j][i])); cycles += c; aux.a[i][k] -= c; aux.a[k][j] -= c; aux.a[j][i] -= c;;
}
int remainingEdges = 0;
for (int i=0;i<MAX;i++)
for (int j=0;j<MAX;j++)
remainingEdges += aux.a[i][j];
assert(remainingEdges % MAX == 0);
cycles += remainingEdges / MAX;
return mtot - cycles;
}
};
const int MAXN = 250000;
Matrix prefix[MAXN+1];
void prefixAdd(int pos, const Matrix &value) {
assert(0 <= pos);
assert(pos < MAXN);
pos++;
prefix[pos].add(prefix[pos-1]);
prefix[pos].add(value);
}
Matrix prefixQuery(int pos) {
assert(0 <= pos);
assert(pos <= MAXN);
Matrix ret;
ret.add(prefix[pos]);
return ret;
}
int charValues[256];
string globalA, globalB;
void init(string a, string b)
{
globalA = a;
globalB = b;
charValues['A'] = 0;
charValues['T'] = 1;
charValues['C'] = 2;
charValues['G'] = 3;
Matrix mat;
for (int i=0;i<int(a.size());i++)
{
int x = charValues[int(a[i])];
int y = charValues[int(b[i])];
mat.a[x][y] = 1;
prefixAdd(i, mat);
mat.a[x][y] = 0;
}
}
int get_distance(int i,int j)
{
Matrix mat = prefixQuery(j+1);
mat.sub(prefix[i]);
if (mat.a[0][1] != mat.a[1][0]) {
return -1;
} else {
return mat.a[0][1];
}
}
|
WA
| 0 | 0 | 0 |
[
0
] |
[
"WA"
] |
[
"Output isn't correct\n1st lines differ - on the 1st token, expected: '2', found: '-1'\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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2021
|
day2
|
Dungeons Game
|
dungeons
|
model_solution/yanhao-full.cpp
|
#include "dungeons.h"
#include <vector>
#include <assert.h>
#include <cstdio>
#define get_phase(x) min((63-__builtin_clzll(x)), maxphase-1)
#define win(node, phase) (get_phase(s[node]) < phase)
#define draw(node, phase) (get_phase(s[node]) == phase)
#define loc_out(x) (win(x, phase) ? w[x] : l[x])
#define sz_out(x) (win(x, phase) ? s[x] : p[x])
using namespace std;
const int maxphase = 25; // number of phases
const int maxpath = 25; // log2(maximum path length)
const int maxn = 4e5+5;
const long long inf = 1LL<<60;
int n;
vector<long long> s,p;
vector<int>w,l;
long long sze1[maxphase][maxn];
long long mx1[maxphase][maxn];
int loc1[maxphase][maxn];
long long sze2[maxpath][maxn];
long long mx2[maxpath][maxn];
int loc2[maxpath][maxn];
void init(int _n, vector<int> _s, vector<int> _p, vector<int> _w, vector<int> _l) {
n = _n; s = vector<long long>(begin(_s), end(_s)); p = vector<long long>(begin(_p), end(_p)); w = _w; l = _l;
int dfs[n+1];
int curr = 0;
for(int phase=0; phase<maxphase; phase++) {
// begin dfs to look for node with the correct phase
for(int node=0; node<n; node++) {
sze1[phase][node] = -1;
}
for(int node=0; node<n; node++) {
if(sze1[phase][node] != -1) continue; // -1 for unvisited
dfs[curr++] = node;
do {
sze1[phase][dfs[curr-1]] = -2;
if(win(dfs[curr-1], phase)) {
dfs[curr] = w[dfs[curr-1]]; // win
} else {
dfs[curr] = l[dfs[curr-1]]; // lose
}
curr++;
} while(dfs[curr-1]!=n && sze1[phase][dfs[curr-1]] == -1 && !draw(dfs[curr-1], phase));
if(dfs[curr-1]==n || draw(dfs[curr-1], phase)) {
sze1[phase][dfs[curr-2]] = sz_out(dfs[curr-2]);
mx1[phase][dfs[curr-2]] = win(dfs[curr-2], phase) ? inf : s[dfs[curr-2]];
loc1[phase][dfs[curr-2]] = dfs[curr-1];
for(int i=(int)curr-2; i>=1; i--) {
sze1[phase][dfs[i-1]] = min(sze1[phase][dfs[i]] + sz_out(dfs[i-1]), inf);
mx1[phase][dfs[i-1]] = min(win(dfs[i-1], phase) ? inf : s[dfs[i-1]],
mx1[phase][dfs[i]] - sz_out(dfs[i-1]));
loc1[phase][dfs[i-1]] = loc1[phase][dfs[i]];
}
} else if(sze1[phase][dfs[curr-1]] >= 0) { // has a legit outgoing edge
for(int i =(int) curr-1; i>=1; i--) {
sze1[phase][dfs[i-1]] = min(sze1[phase][dfs[i]] + sz_out(dfs[i-1]), inf);
mx1[phase][dfs[i-1]] = min(win(dfs[i-1], phase) ? inf : s[dfs[i-1]],
mx1[phase][dfs[i]] - sz_out(dfs[i-1]));
loc1[phase][dfs[i-1]] = loc1[phase][dfs[i]];
}
}
curr = 0;
}
}
for(int node=0; node<n; node++) {
sze2[0][node] = sze1[get_phase(s[node])][node];
mx2[0][node] = mx1[get_phase(s[node])][node];
loc2[0][node] = loc1[get_phase(s[node])][node];
}
sze2[0][n] = 0;
mx2[0][n] = inf;
loc2[0][n] = n;
for(int len=1; len<maxpath; len++) {
for(int node=0; node<=n; node++) {
int l2 = loc2[len-1][node];
if(l2!=-1) {
sze2[len][node] = min(sze2[len-1][node] + sze2[len-1][l2],inf);
mx2[len][node] = min(mx2[len-1][node], mx2[len-1][l2]-sze2[len-1][node]);
loc2[len][node] = loc2[len-1][l2];
} else {
sze2[len][node] = sze2[len-1][node];
mx2[len][node] = mx2[len-1][node];
loc2[len][node] = loc2[len-1][node];
}
}
}
}
void step_forward(int &x, long long &z) {
if(z >= s[x]) {
z += s[x];
x = w[x];
} else {
z += p[x];
x = l[x];
}
}
long long simulate(int x, int _z) {
long long z = _z;
int phase = get_phase(z);
while(x<n) {
assert(phase<maxphase);
if(z < mx1[phase][x] && sze1[phase][x] != inf) {
z += sze1[phase][x];
x = loc1[phase][x];
if(x==n) return z;
for(int i=min(maxpath-1, 1+get_phase(s[x])); i>=0; i--) {
if(z < mx2[i][x] && sze2[i][x] != inf) {
z += sze2[i][x];
x = loc2[i][x];
}
}
if(x==n) return z;
assert(z >= mx1[phase][x] || sze1[phase][x] == inf);
}
if (phase == get_phase(s[x])) {
step_forward(x,z);
phase = max(phase, get_phase(z));
} else {
phase++;
}
}
return z;
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
incorrect/jonathanirvings_min-wa.cpp
|
#include "registers.h"
#include <bits/stdc++.h>
using namespace std;
constexpr int M = 100;
constexpr int B = 2000;
constexpr int kToComplete = M - 1;
constexpr int kSecondElem = M - 1;
constexpr int kSecondElemComplement = kSecondElem - 1;
constexpr int kFilterBits = kSecondElemComplement - 1;
constexpr int kLsb = kFilterBits - 1;
constexpr int kMsb = kLsb - 1;
constexpr int kTakeFromFirst = kMsb - 1;
constexpr int kTakeFromSecond = kTakeFromFirst - 1;
constexpr int kFirstElemMsb = kTakeFromSecond - 1;
constexpr int kSecondElemMsb = kFirstElemMsb - 1;
constexpr int kOverrideToZero = kSecondElemMsb - 1;
constexpr int kOverrideToOne = kOverrideToZero - 1;
constexpr int kBuffer = kOverrideToOne - 1;
constexpr int kFilterBitsPlusOne = kBuffer - 1;
void compute_min(int diff, const int N, const int K) {
if (diff == N) {
return;
}
vector<bool> filter_bits(B, false);
vector<bool> filter_bits_plus_one(B, false);
vector<bool> lsb(B, false);
for (int i = 0; i < N; i += 2 * diff) {
lsb[i * K] = true;
fill(filter_bits.begin() + i * K, filter_bits.begin() + (i + 1) * K, true);
fill(filter_bits_plus_one.begin() + i * K,
filter_bits_plus_one.begin() + (i + 1) * K + 1, true);
}
append_store(kFilterBitsPlusOne, filter_bits_plus_one);
append_store(kFilterBits, filter_bits);
append_store(kLsb, lsb);
append_right(kSecondElem, 0, diff * K);
append_and(kSecondElem, kSecondElem, kFilterBits);
append_and(0, 0, kFilterBits);
append_and(kFirstElemMsb, 0, kMsb);
append_and(kSecondElemMsb, kSecondElem, kMsb);
append_not(kOverrideToZero, kFirstElemMsb);
append_and(kOverrideToOne, kOverrideToZero, kSecondElemMsb);
append_or(kOverrideToZero, kOverrideToZero, kSecondElemMsb);
append_not(kSecondElemComplement, kSecondElem);
append_add(kSecondElemComplement, kSecondElemComplement, kLsb);
append_and(kSecondElemComplement, kSecondElemComplement, kFilterBits);
append_add(kSecondElemComplement, 0, kSecondElemComplement);
append_and(kSecondElemComplement, kSecondElemComplement, kOverrideToZero);
append_or(kSecondElemComplement, kSecondElemComplement, kOverrideToOne);
append_right(kSecondElemComplement, kSecondElemComplement, K - 1);
append_and(kSecondElemComplement, kSecondElemComplement, kLsb);
append_add(kTakeFromSecond, kSecondElemComplement, kFilterBits);
append_not(kTakeFromFirst, kTakeFromSecond);
append_and(kTakeFromSecond, kTakeFromSecond, kSecondElem);
append_and(kTakeFromFirst, kTakeFromFirst, 0);
append_or(0, kTakeFromSecond, kTakeFromFirst);
compute_min(diff << 1, N, K);
}
void construct_instructions(int S, int N, int K, int Q) {
vector<bool> to_complete(B, false);
vector<bool> msb(B, false);
while (N != (1 << __builtin_ctz(N))) {
fill(to_complete.begin() + N * K, to_complete.begin() + (N + 1) * K, true);
++N;
}
for (int i = 0; i < N; ++i) {
msb[(i + 1) * K - 1] = true;
}
append_store(kMsb, msb);
append_store(kToComplete, to_complete);
append_or(0, 0, kToComplete);
compute_min(1, N, K);
}
|
WA
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"WA"
] |
[
"Output is correct\n\n",
"Output isn't correct\nIncorrect sorting\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
incorrect/jonathanirvings_single-min-expensive.cpp
|
#include "registers.h"
#include <bits/stdc++.h>
using namespace std;
constexpr int M = 100;
constexpr int B = 2000;
constexpr int kFinalAnswer = M - 1;
constexpr int kExpectedInput = kFinalAnswer - 1;
constexpr int kExpectedOutput = kExpectedInput - 1;
constexpr int kFirstBuffer = kExpectedOutput - 1;
constexpr int kSecondBuffer = kFirstBuffer - 1;
void load(int K, int val, int starting_index, vector<bool> &v) {
for (int i = 0; i < K; ++i) {
if (val & (1 << i)) {
v[starting_index + i] = true;
}
}
}
void construct_instructions(int S, int N, int K, int Q) {
for (int i = 0; i < (1 << K); ++i) {
for (int j = 0; j < (1 << K); ++j) {
vector<bool> expected_input(B, false);
vector<bool> expected_output(B, false);
load(K, i, 0, expected_input);
load(K, j, K, expected_input);
load(K, min(i, j), 0, expected_output);
append_store(kExpectedInput, expected_input);
append_store(kExpectedOutput, expected_output);
append_xor(kFirstBuffer, 0, kExpectedInput);
for (int bit = 1; bit < 2 * K; ++bit) {
append_right(kSecondBuffer, kFirstBuffer, 1);
append_or(kFirstBuffer, kFirstBuffer, kSecondBuffer);
}
for (int bit = 1; bit < K; ++bit) {
append_left(kSecondBuffer, kFirstBuffer, 1);
append_or(kFirstBuffer, kFirstBuffer, kSecondBuffer);
}
append_not(kFirstBuffer, kFirstBuffer);
append_and(kFirstBuffer, kFirstBuffer, kExpectedOutput);
append_or(kFinalAnswer, kFinalAnswer, kFirstBuffer);
}
}
append_move(0, kFinalAnswer);
}
|
WA
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"WA"
] |
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] |
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SKIPPED
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
incorrect/jonathanirvings_min-linear.cpp
|
#include "registers.h"
#include <bits/stdc++.h>
using namespace std;
constexpr int M = 100;
constexpr int B = 2000;
constexpr int kOne = M - 1;
constexpr int kOneTimesK = kOne - 1;
constexpr int kFirstBuffer = kOneTimesK - 1;
constexpr int kSecondBuffer = kFirstBuffer - 1;
// r[c] = min(r[a], r[b])
void take_min(int K, int a, int b, int c) {
append_not(kFirstBuffer, b);
append_add(kFirstBuffer, kFirstBuffer, kOne); // r[kFirstBuffer] is 2s complement
// of r[b]
append_add(kFirstBuffer, a, kFirstBuffer);
append_right(kFirstBuffer, kFirstBuffer, B - 1); // r[kFirstBuffer] is 0 if
// r[a] >= r[b], else 1
for (int i = 1; i < K; ++i) {
append_left(kSecondBuffer, kFirstBuffer, 1);
append_or(kFirstBuffer, kFirstBuffer, kSecondBuffer);
}
// r[kFirstBuffer] is 0 if r[a] >= r[b], else 1 * K
append_xor(kSecondBuffer, kFirstBuffer, kOneTimesK);
// r[kSecondBuffer] is 0 if r[a] < r[b], else 1 * K
append_and(kFirstBuffer, kFirstBuffer, a); // r[kFirstBuffer] is 0 if
// r[a] >= r[b], else r[a]
append_and(kSecondBuffer, kSecondBuffer, b); // r[kSecondBuffer] is 0 if
// r[a] < r[b], else r[b]
append_or(c, kFirstBuffer, kSecondBuffer);
}
void construct_instructions(int S, int N, int K, int Q) {
vector<bool> v(B, false);
v[0] = true;
append_store(kOne, v);
for (int i = 0; i < K; ++i) {
v[i] = true;
}
append_store(kOneTimesK, v);
append_move(2, 0);
append_and(0, 0, kOneTimesK);
for (int i = 1; i < N; ++i) {
append_right(1, 2, i * K);
append_and(1, 1, kOneTimesK);
take_min(K, 0, 1, 0);
}
}
|
WA
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"WA"
] |
[
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] |
00-samples
| true | 0 |
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
correct/prabowo_min.cpp
|
// Number of instructions: 2 + 12 * log(n)
// For n = 100 and k = 100, number of instructions: 86
#include "registers.h"
#include <vector>
const int M = 100;
const int B = 2000;
void construct_instructions(int, int n, int k, int) {
// Append a with (2^k - 1) until n is power of 2
std::vector<bool> v(B);
for (; (n & -n) != n; ++n) {
for (int i = 0; i < k; ++i) {
v[n*k + i] = true;
}
}
append_store(1, v); append_or(0, 0, 1);
for (int len = 1; len < n; len <<= 1) {
// In this iteration, this will happen:
// a[i] := min(a[i], a[i + len]) for all i = 0 (mod 2*len)
std::vector<bool> evenMask(B);
for (int i = 0; i < n; ++i) {
if (i % len != 0) continue;
if (!(i & len)) {
for (int j = 0; j < k; ++j) evenMask[i*k + j] = true;
}
}
// Initialize some constants (e.g. k=2, len=2):
// EvenReg: 110000001100000011000...
const int kEvenReg = M - 3, kOddReg = M - 2;
append_store(kEvenReg, evenMask);
// Separate a[x] where x/(2^len) is odd/even
const int kEvenPos = 1, kOddPos = 2;
append_and(kEvenPos, kEvenReg, 0); append_xor(kOddPos, kEvenPos, 0); append_right(kOddPos, kOddPos, k * len);
// Create negative of odd positions
const int kOddNeg = 3;
append_xor(kOddNeg, kOddPos, kEvenReg);
// Even - Odd; if a[i] < a[i + len] then the "Add register" at position i*k is 0, otherwise 1
const int kAddPos = 4;
append_add(kAddPos, kEvenPos, kOddNeg); append_right(kAddPos, kAddPos, k);
// Filter the even (then odd) positions that are the "min"
append_add(kAddPos, kAddPos, kEvenReg); append_and(kEvenPos, kEvenPos, kAddPos);
append_xor(kAddPos, kAddPos, kEvenReg); append_and(kOddPos, kOddPos, kAddPos);
append_or(0, kOddPos, kEvenPos);
}
}
|
WA
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"WA"
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[
"Output is correct\n\n",
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] |
00-samples
| true | 0 |
SKIPPED
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
correct/st4.cpp
|
#include <bits/stdc++.h>
#include "registers.h"
using namespace std;
const int b = 2000;
void construct_instructions(int s, int n, int k, int q) {
vector<bool> v(b,0);
for(int i=0; i<b; i++) {
if(i%(2*k)==0) {
v[i] = 1;
}
}
append_store(3, v);
vector<bool> mask_ones(b);
for(int i=0; i<b; i++) {
if((i/k)%2==0) {
mask_ones[i] = 1;
}
}
append_store(4, mask_ones);
vector<bool> fill_up(b);
for(int i=n*k; i<b; i++) {
// ensure that we do not
// accidentally take min with 0
fill_up[i] = 1;
}
append_store(5, fill_up);
append_or(0, 0, 5);
int iter = 1 + (int)log2(n-0.001); // ceil(log2(n))
int a = k;
while(iter--) {
append_right(1, 0, a); // we need to shift twice as many bits each time
a *= 2;
append_not(8, 1);
append_and(8, 8, 4);
append_and(0, 0, 4);
append_add(2, 0, 8);
append_right(2, 2, k); // always k bits, do not change
append_and(2, 2, 3); // 2 should be 0...01 or 0....00
append_add(2, 2, 4); // now 2 is 0....00 or 1....11
append_and(6,2,0);
append_not(7,2);
append_and(7,1,7);
append_or(0,6,7);
n = n/2;
}
// so now we have min(a0,a1), blank, min(a2,a3), blank etc
return;
}
|
WA
| 0 | 0 | 0 |
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1,
0
] |
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"AC",
"WA"
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] |
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SKIPPED
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
correct/prabowo_sort.cpp
|
// Number of instructions: O(log^2(n))
// For s = 1, n = 100, and k = 10, number of instructions: 926
#include "registers.h"
#include <vector>
const int M = 100;
const int B = 2000;
// Categorize the smaller numbers from (evenMask U evenMask + len) to evenMask,
// and larger numbers to evenMask + len.
// Result is in register t
void sort_category(int t, int k, std::vector<bool> evenMask, int len) {
const int kEvenReg = M - 3;
append_store(kEvenReg, evenMask);
const int kEvenPos = M - 4, kOddPos = M - 5;
append_and(kEvenPos, kEvenReg, 0);
append_xor(kOddPos, kEvenPos, 0); append_right(kOddPos, kOddPos, k * len); append_and(kOddPos, kOddPos, kEvenReg);
// Create negative of odd positions
const int kOddNeg = M - 6;
append_xor(kOddNeg, kOddPos, kEvenReg);
// Even - Odd; if a[i] < a[i + len] then the "Add register" at the corresponding position is 0, otherwise 1
const int kAddPos = M - 7;
append_add(kAddPos, kEvenPos, kOddNeg); append_right(kAddPos, kAddPos, k);
// Filter the min pos and max pos
const int kMinPos = M - 8, kMaxPos = M - 9;
append_add(kAddPos, kAddPos, kEvenReg); append_and(kMinPos, kEvenPos, kAddPos); append_and(kMaxPos, kOddPos, kAddPos);
append_xor(kOddPos, kOddPos, kMaxPos); append_xor(kEvenPos, kEvenPos, kMinPos);
append_or(kMinPos, kMinPos, kOddPos); append_or(kMaxPos, kMaxPos, kEvenPos);
append_left(kMaxPos, kMaxPos, k * len);
append_or(t, kMinPos, kMaxPos);
}
void construct_instructions(int s, int n, int k, int) {
// Append a with (2^k - 1) until n is power of 2
std::vector<bool> v(B);
for (; (n & -n) != n; ++n) {
for (int i = 0; i < k; ++i) {
v[n*k + i] = true;
}
}
append_store(1, v); append_or(0, 0, 1);
for (int len = 1; len < n; len <<= 1) {
for (int step = len; step > (s == 0 ? len - 1 : 0); step >>= 1) {
std::vector<bool> firstEven(B);
std::vector<bool> secondEven(B);
for (int i = 0; i + step < n; ++i) {
if ((step == len && (i & step)) || (step != len && !(i & step))) continue;
if (i / (len * 2) != (i + step) / (len * 2)) continue;
if ((i & 1) && step != 1) {
for (int j = 0; j < k; ++j) {
secondEven[i * k + j] = true;
}
} else {
for (int j = 0; j < k; ++j) {
firstEven[i * k + j] = true;
}
}
}
std::vector<bool> neitherMask(B);
for (int i = 0; i < n; ++i) {
if (firstEven[i * k] || secondEven[i * k]) continue;
if (i >= step && (firstEven[(i - step) * k] || secondEven[(i - step) * k])) continue;
for (int j = 0; j < k; ++j) {
neitherMask[i * k + j] = true;
}
}
sort_category(1, k, firstEven, step);
if (s != 0 && step != 1) {
sort_category(2, k, secondEven, step);
}
if (step != len) {
append_store(3, neitherMask); append_and(3, 3, 0);
append_or(1, 1, 3);
}
append_or(0, 1, s != 0 && step != 1 ? 2 : 1);
}
}
}
|
AC
| 1 | 0 | 0 |
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1,
1
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[
"AC",
"AC"
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00-samples
| true | 0 |
SKIPPED
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2021
|
day2
|
Bit Shift Registers
|
registers
|
incorrect/jonathanirvings_min.cpp
|
#include "registers.h"
#include <bits/stdc++.h>
using namespace std;
constexpr int M = 100;
constexpr int B = 2000;
constexpr int kToComplete = M - 1;
constexpr int kSecondElem = M - 1;
constexpr int kSecondElemComplement = kSecondElem - 1;
constexpr int kFilterBits = kSecondElemComplement - 1;
constexpr int kLsb = kFilterBits - 1;
constexpr int kMsb = kLsb - 1;
constexpr int kTakeFromFirst = kMsb - 1;
constexpr int kTakeFromSecond = kTakeFromFirst - 1;
constexpr int kFirstElemMsb = kTakeFromSecond - 1;
constexpr int kSecondElemMsb = kFirstElemMsb - 1;
constexpr int kOverrideToZero = kSecondElemMsb - 1;
constexpr int kOverrideToOne = kOverrideToZero - 1;
constexpr int kBuffer = kOverrideToOne - 1;
constexpr int kFilterBitsPlusOne = kBuffer - 1;
void compute_min(int diff, const int N, const int K) {
if (diff == N) {
return;
}
vector<bool> filter_bits(B, false);
vector<bool> filter_bits_plus_one(B, false);
vector<bool> lsb(B, false);
for (int i = 0; i < N; i += 2 * diff) {
lsb[i * K] = true;
fill(filter_bits.begin() + i * K, filter_bits.begin() + (i + 1) * K, true);
fill(filter_bits_plus_one.begin() + i * K,
filter_bits_plus_one.begin() + (i + 1) * K + 1, true);
}
append_store(kFilterBitsPlusOne, filter_bits_plus_one);
append_store(kFilterBits, filter_bits);
append_store(kLsb, lsb);
append_right(kSecondElem, 0, diff * K);
append_and(kSecondElem, kSecondElem, kFilterBits);
append_and(0, 0, kFilterBits);
append_not(kSecondElemComplement, kSecondElem);
append_add(kSecondElemComplement, kSecondElemComplement, kLsb);
append_and(kSecondElemComplement, kSecondElemComplement, kFilterBitsPlusOne);
append_add(kSecondElemComplement, 0, kSecondElemComplement);
append_right(kSecondElemComplement, kSecondElemComplement, K);
append_and(kSecondElemComplement, kSecondElemComplement, kLsb);
append_add(kTakeFromSecond, kSecondElemComplement, kFilterBits);
append_not(kTakeFromFirst, kTakeFromSecond);
append_and(kTakeFromSecond, kTakeFromSecond, kSecondElem);
append_and(kTakeFromFirst, kTakeFromFirst, 0);
append_or(0, kTakeFromSecond, kTakeFromFirst);
compute_min(diff << 1, N, K);
}
void construct_instructions(int S, int N, int K, int Q) {
vector<bool> to_complete(B, false);
vector<bool> msb(B, false);
while (N != (1 << __builtin_ctz(N))) {
fill(to_complete.begin() + N * K, to_complete.begin() + (N + 1) * K, true);
++N;
}
for (int i = 0; i < N; ++i) {
msb[(i + 1) * K - 1] = true;
}
append_store(kMsb, msb);
append_store(kToComplete, to_complete);
append_or(0, 0, kToComplete);
compute_min(1, N, K);
}
|
WA
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"WA"
] |
[
"Output is correct\n\n",
"Output isn't correct\nIncorrect sorting\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
model_solution/model-solution.cpp
|
#include <bits/stdc++.h>
#include "registers.h"
using namespace std;
const int b = 2000;
void construct_instructions(int s, int n, int k, int q) {
if(s==0) {
vector<bool> v(b,0);
for(int i=0; i<b; i++) {
if(i%(2*k)==0) {
v[i] = 1;
}
}
append_store(3, v);
vector<bool> mask_ones(b);
for(int i=0; i<b; i++) {
if((i/k)%2==0) {
mask_ones[i] = 1;
}
}
append_store(4, mask_ones);
vector<bool> fill_up(b);
for(int i=n*k; i<b; i++) {
// ensure that we do not
// accidentally take min with 0
fill_up[i] = 1;
}
append_store(5, fill_up);
append_or(0, 0, 5);
int iter = 1 + (int)log2(n-0.001); // ceil(log2(n))
int a = k;
while(iter--) {
append_right(1, 0, a); // we need to shift twice as many bits each time
a *= 2;
append_not(8, 1);
append_and(8, 8, 4);
append_and(0, 0, 4);
append_add(2, 0, 8);
append_right(2, 2, k); // always k bits, do not change
append_and(2, 2, 3); // 2 should be 0...01 or 0....00
append_add(2, 2, 4); // now 2 is 0....00 or 1....11
append_and(6,2,0);
append_not(7,2);
append_and(7,1,7);
append_or(0,6,7);
}
} else {
vector<bool> v(b,0);
for(int i=0; i<b; i++) {
if(i%(2*k)==0) {
v[i] = 1;
}
}
append_store(3, v);
vector<bool> mask_ones(b);
for(int i=0; i<b; i++) {
if((i/k)%2==0) {
mask_ones[i] = 1;
}
}
append_store(4, mask_ones);
vector<bool> fill_up(b);
for(int i=n*k; i<b; i++) {
// ensure that we do not
// accidentally take min with 0
fill_up[i] = 1;
}
append_store(5, fill_up);
append_or(0, 0, 5);
for(int iter=0; iter<n; iter++) {
if(iter%2==0) {
append_right(1, 0, k); // we need to shift twice as many bits each time
} else {
append_left(1, 0, k);
}
append_not(8, 1);
append_and(8, 8, 4);
append_and(0, 0, 4);
append_add(2, 0, 8);
append_right(2, 2, k); // always k bits, do not change
append_and(2, 2, 3); // 2 should be 0...01 or 0....00
append_add(2, 2, 4); // now 2 is 0....00 or 1....11
append_not(7,2);
append_and(6,2,0);
append_and(8,1,7);
append_or(10,6,8);
append_and(10,10,4);
append_and(6,2,1);
append_and(8,7,0);
append_or(9,6,8);
append_and(9,9,4);
if(iter%2==0) {
append_left(9,9,k);
} else {
append_right(10,10,k);
}
append_or(0,9,10);
}
append_not(5,5);
append_and(0,0,5);
}
return;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Output is correct\n\n",
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
correct/stress_store.cpp
|
#include "registers.h"
#include <algorithm>
#include <chrono>
#include <random>
#include <vector>
const int M = 100;
const int B = 2000;
namespace Solution {
int instruction_count;
void append_move(int t, int x) { ::append_move(t, x); ++instruction_count; }
void append_store(int t, std::vector<bool> v) { ::append_store(t, v); ++instruction_count; }
void append_and(int t, int x, int y) { ::append_and(t, x, y); ++instruction_count; }
void append_or(int t, int x, int y) { ::append_or(t, x, y); ++instruction_count; }
void append_xor(int t, int x, int y) { ::append_xor(t, x, y); ++instruction_count; }
void append_not(int t, int x) { ::append_not(t, x); ++instruction_count; }
void append_left(int t, int x, int s) { ::append_left(t, x, s); ++instruction_count; }
void append_right(int t, int x, int s) { ::append_right(t, x, s); ++instruction_count; }
void append_add(int t, int x, int y) { ::append_add(t, x, y); ++instruction_count; }
// Categorize the smaller numbers from (evenMask U evenMask + len) to evenMask,
// and larger numbers to evenMask + len.
// Result is in register t
void sort_category(int t, int k, std::vector<bool> evenMask, int len) {
const int kEvenReg = M - 3;
append_store(kEvenReg, evenMask);
const int kEvenPos = M - 4, kOddPos = M - 5;
append_and(kEvenPos, kEvenReg, 0);
append_xor(kOddPos, kEvenPos, 0); append_right(kOddPos, kOddPos, k * len); append_and(kOddPos, kOddPos, kEvenReg);
// Create negative of odd positions
const int kOddNeg = M - 6;
append_xor(kOddNeg, kOddPos, kEvenReg);
// Even - Odd; if a[i] < a[i + len] then the "Add register" at the corresponding position is 0, otherwise 1
const int kAddPos = M - 7;
append_add(kAddPos, kEvenPos, kOddNeg); append_right(kAddPos, kAddPos, k);
// Filter the min pos and max pos
const int kMinPos = M - 8, kMaxPos = M - 9;
append_add(kAddPos, kAddPos, kEvenReg); append_and(kMinPos, kEvenPos, kAddPos); append_and(kMaxPos, kOddPos, kAddPos);
append_xor(kOddPos, kOddPos, kMaxPos); append_xor(kEvenPos, kEvenPos, kMinPos);
append_or(kMinPos, kMinPos, kOddPos); append_or(kMaxPos, kMaxPos, kEvenPos);
append_left(kMaxPos, kMaxPos, k * len);
append_or(t, kMinPos, kMaxPos);
}
void construct_instructions(int s, int n, int k) {
// Append a with (2^k - 1) until n is power of 2
std::vector<bool> v(B);
for (; (n & -n) != n; ++n) {
for (int i = 0; i < k; ++i) {
v[n*k + i] = true;
}
}
append_store(1, v); append_or(0, 0, 1);
for (int len = 1; len < n; len <<= 1) {
for (int step = len; step > (s == 0 ? len - 1 : 0); step >>= 1) {
std::vector<bool> firstEven(B);
std::vector<bool> secondEven(B);
for (int i = 0; i + step < n; ++i) {
if ((step == len && (i & step)) || (step != len && !(i & step))) continue;
if (i / (len * 2) != (i + step) / (len * 2)) continue;
if ((i & 1) && step != 1) {
for (int j = 0; j < k; ++j) {
secondEven[i * k + j] = true;
}
} else {
for (int j = 0; j < k; ++j) {
firstEven[i * k + j] = true;
}
}
}
std::vector<bool> neitherMask(B);
for (int i = 0; i < n; ++i) {
if (firstEven[i * k] || secondEven[i * k]) continue;
if (i >= step && (firstEven[(i - step) * k] || secondEven[(i - step) * k])) continue;
for (int j = 0; j < k; ++j) {
neitherMask[i * k + j] = true;
}
}
sort_category(1, k, firstEven, step);
if (s != 0 && step != 1) {
sort_category(2, k, secondEven, step);
}
if (step != len) {
append_store(3, neitherMask); append_and(3, 3, 0);
append_or(1, 1, 3);
}
append_or(0, 1, s != 0 && step != 1 ? 2 : 1);
}
}
}
} // namespace Solution
void construct_instructions(int s, int n, int k, int q) {
Solution::construct_instructions(s, n, k);
std::mt19937 rng(
std::chrono::high_resolution_clock::now().time_since_epoch().count()
);
for (int i = Solution::instruction_count; i < q; ++i) {
std::vector<bool> v(B);
std::generate(v.begin(), v.end(), [&rng]() { return rng() % 2; });
append_store(rng() % (M - 1) + 1, v);
}
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Output is correct\n\n",
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
incorrect/st2.cpp
|
#include <bits/stdc++.h>
#include "registers.h"
using namespace std;
const int b = 2000;
void construct_instructions(int s, int n, int k, int q) {
vector<bool> v(b,0);
v[0] = 1;
append_store(3, v);
vector<bool> all_ones(b,1);
append_store(4, all_ones);
vector<bool> last_k(b,0);
for(int i=0; i<k; i++) {
last_k[i] = 1;
}
append_store(5, last_k);
append_right(1, 0, k);
append_not(8, 1);
append_and(8, 8, 5);
append_and(0, 0, 5);
append_add(2, 0, 8);
append_right(2, 2, k);
append_and(2, 2, 3); // 2 should be 0...01 or 0....00
append_add(2, 2, 4); // now 2 is 0....00 or 1....11
append_and(6,2,5);
append_and(6,6,0);
append_not(7,2);
append_and(7,7,5);
append_and(7,1,7);
append_or(0,6,7);
return;
}
|
WA
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"WA"
] |
[
"Output is correct\n\n",
"Output isn't correct\nIncorrect sorting\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
failed/bad-behaviors.cpp
|
#include "registers.h"
#include <iostream>
using namespace std;
void construct_instructions(int s, int n, int k, int q) {
const int m = 100;
const int b = 2000;
if (s==0 && n==2 && k==1 && q==1000) {
cerr << "empty" << endl;
return;
}
if (s==1 && n==2 && k==1 && q==1000) {
cerr << "tamper output" << endl;
cout << "hi" << endl;
append_move(1, 0);
return;
}
if (s==0 && n==2 && k==2 && q==1000) {
cerr << "short v" << endl;
vector<bool> v(b-1, false);
append_store(1, v);
return;
}
if (s==0 && n==2 && k==2 && q==20) {
cerr << "long v" << endl;
vector<bool> v(b+1, false);
append_store(1, v);
return;
}
if (s==0 && n==100 && k==10 && q==4000) {
cerr << "shift-left low p" << endl;
append_left(0, 1, -1);
return;
}
if (s==0 && n==89 && k==7 && q==4000) {
cerr << "shift-left high p" << endl;
append_left(0, 1, b+1);
return;
}
if (s==0 && n==94 && k==9 && q==4000) {
cerr << "many instructions (4000)" << endl;
for (int i=0; i<q+1; i++)
append_move(1, 0);
return;
}
if (s==0 && n==100 && k==10 && q==150) {
cerr << "shift-right low p" << endl;
append_right(0, 1, -1);
return;
}
if (s==0 && n==80 && k==9 && q==150) {
cerr << "shift-right high p" << endl;
append_right(0, 1, b+1);
return;
}
if (s==0 && n==96 && k==8 && q==150) {
cerr << "many instructions (150)" << endl;
vector<bool> v(b, false);
for (int i=0; i<q+1; i++)
append_store(1, v);
return;
}
if (s==0 && n==65 && k==10 && q==150) {
cerr << "param1 low" << endl;
append_move(-1, 0);
return;
}
if (s==0 && n==64 && k==10 && q==150) {
cerr << "param1 high" << endl;
append_move(m, 0);
return;
}
if (s==0 && n==63 && k==10 && q==150) {
cerr << "param2 low" << endl;
append_move(0, -1);
return;
}
if (s==1 && n==10 && k==10 && q==4000) {
cerr << "param2 high" << endl;
append_move(0, m);
return;
}
if (s==1 && n==8 && k==7 && q==4000) {
cerr << "param3 low" << endl;
append_add(1, 0, -1);
return;
}
if (s==1 && n==100 && k==10 && q==4000) {
cerr << "param3 high" << endl;
append_add(1, 0, m);
return;
}
// gen 1 91 6 4000
// gen 1 65 10 4000
// gen 1 64 10 4000
// gen 1 63 10 4000
append_right(1, 1, 1);
append_and(0, 0, 1);
}
|
WA
| 0 | 0 | 0 |
[
0,
0
] |
[
"WA",
"SKIPPED"
] |
[
"empty\nOutput isn't correct\nIncorrect min value\n",
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
correct/stress_add.cpp
|
#include "registers.h"
#include <chrono>
#include <random>
#include <vector>
const int M = 100;
const int B = 2000;
namespace Solution {
int instruction_count;
void append_move(int t, int x) { ::append_move(t, x); ++instruction_count; }
void append_store(int t, std::vector<bool> v) { ::append_store(t, v); ++instruction_count; }
void append_and(int t, int x, int y) { ::append_and(t, x, y); ++instruction_count; }
void append_or(int t, int x, int y) { ::append_or(t, x, y); ++instruction_count; }
void append_xor(int t, int x, int y) { ::append_xor(t, x, y); ++instruction_count; }
void append_not(int t, int x) { ::append_not(t, x); ++instruction_count; }
void append_left(int t, int x, int s) { ::append_left(t, x, s); ++instruction_count; }
void append_right(int t, int x, int s) { ::append_right(t, x, s); ++instruction_count; }
void append_add(int t, int x, int y) { ::append_add(t, x, y); ++instruction_count; }
// Categorize the smaller numbers from (evenMask U evenMask + len) to evenMask,
// and larger numbers to evenMask + len.
// Result is in register t
void sort_category(int t, int k, std::vector<bool> evenMask, int len) {
const int kEvenReg = M - 3;
append_store(kEvenReg, evenMask);
const int kEvenPos = M - 4, kOddPos = M - 5;
append_and(kEvenPos, kEvenReg, 0);
append_xor(kOddPos, kEvenPos, 0); append_right(kOddPos, kOddPos, k * len); append_and(kOddPos, kOddPos, kEvenReg);
// Create negative of odd positions
const int kOddNeg = M - 6;
append_xor(kOddNeg, kOddPos, kEvenReg);
// Even - Odd; if a[i] < a[i + len] then the "Add register" at the corresponding position is 0, otherwise 1
const int kAddPos = M - 7;
append_add(kAddPos, kEvenPos, kOddNeg); append_right(kAddPos, kAddPos, k);
// Filter the min pos and max pos
const int kMinPos = M - 8, kMaxPos = M - 9;
append_add(kAddPos, kAddPos, kEvenReg); append_and(kMinPos, kEvenPos, kAddPos); append_and(kMaxPos, kOddPos, kAddPos);
append_xor(kOddPos, kOddPos, kMaxPos); append_xor(kEvenPos, kEvenPos, kMinPos);
append_or(kMinPos, kMinPos, kOddPos); append_or(kMaxPos, kMaxPos, kEvenPos);
append_left(kMaxPos, kMaxPos, k * len);
append_or(t, kMinPos, kMaxPos);
}
void construct_instructions(int s, int n, int k) {
// Append a with (2^k - 1) until n is power of 2
std::vector<bool> v(B);
for (; (n & -n) != n; ++n) {
for (int i = 0; i < k; ++i) {
v[n*k + i] = true;
}
}
append_store(1, v); append_or(0, 0, 1);
for (int len = 1; len < n; len <<= 1) {
for (int step = len; step > (s == 0 ? len - 1 : 0); step >>= 1) {
std::vector<bool> firstEven(B);
std::vector<bool> secondEven(B);
for (int i = 0; i + step < n; ++i) {
if ((step == len && (i & step)) || (step != len && !(i & step))) continue;
if (i / (len * 2) != (i + step) / (len * 2)) continue;
if ((i & 1) && step != 1) {
for (int j = 0; j < k; ++j) {
secondEven[i * k + j] = true;
}
} else {
for (int j = 0; j < k; ++j) {
firstEven[i * k + j] = true;
}
}
}
std::vector<bool> neitherMask(B);
for (int i = 0; i < n; ++i) {
if (firstEven[i * k] || secondEven[i * k]) continue;
if (i >= step && (firstEven[(i - step) * k] || secondEven[(i - step) * k])) continue;
for (int j = 0; j < k; ++j) {
neitherMask[i * k + j] = true;
}
}
sort_category(1, k, firstEven, step);
if (s != 0 && step != 1) {
sort_category(2, k, secondEven, step);
}
if (step != len) {
append_store(3, neitherMask); append_and(3, 3, 0);
append_or(1, 1, 3);
}
append_or(0, 1, s != 0 && step != 1 ? 2 : 1);
}
}
}
} // namespace Solution
void construct_instructions(int s, int n, int k, int q) {
Solution::construct_instructions(s, n, k);
std::mt19937 rng(
std::chrono::high_resolution_clock::now().time_since_epoch().count()
);
for (int i = Solution::instruction_count; i < q; ++i) {
append_add(rng() % (M - 1) + 1, rng() % M, rng() % M);
}
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Output is correct\n\n",
"Output is correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
incorrect/prabowo_min_wa.cpp
|
#include "registers.h"
#include <vector>
const int M = 100;
const int B = 2000;
void construct_instructions(int, int n, int k, int) {
std::vector<bool> v(B);
for (; (n & -n) != n; ++n) {
for (int i = 0; i < k; ++i) {
v[n*k + i] = true;
}
}
append_store(1, v); append_or(0, 0, 1);
for (int len = 1; len < n; len <<= 1) {
std::vector<bool> oddMask(B), evenMask(B), ones(B);
for (int i = 0; i < n; ++i) {
if (i % len != 0) continue;
if (i & len) {
for (int j = 0; j < k; ++j) oddMask[i*k + j] = true;
} else {
for (int j = 0; j < k; ++j) evenMask[i*k + j] = true;
ones[i*k] = 1;
}
}
const int kEvenReg = M - 3, kOddReg = M - 2, kOnesReg = M - 1;
append_store(kEvenReg, evenMask); append_store(kOddReg, oddMask); append_store(kOnesReg, ones);
const int kEvenPos = 1, kOddPos = 2;
append_and(kEvenPos, kEvenReg, 0); append_and(kOddPos, kOddReg, 0); append_right(kOddPos, kOddPos, k * len);
const int kOddNeg = 3;
append_xor(kOddNeg, kOddPos, kEvenReg); append_add(kOddNeg, kOnesReg, kOddNeg);
const int kAddPos = 4;
// The bug is here, missing one more AND command
append_add(kAddPos, kEvenPos, kOddNeg); append_right(kAddPos, kAddPos, k);
append_add(kAddPos, kAddPos, kEvenReg); append_and(kEvenPos, kEvenPos, kAddPos);
append_xor(kAddPos, kAddPos, kEvenReg); append_and(kOddPos, kOddPos, kAddPos);
append_or(0, kOddPos, kEvenPos);
}
}
|
WA
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"WA"
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[
"Output is correct\n\n",
"Output isn't correct\nIncorrect sorting\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2021
|
day2
|
Bit Shift Registers
|
registers
|
incorrect/jonathanirvings_single-min.cpp
|
#include "registers.h"
#include <bits/stdc++.h>
using namespace std;
constexpr int M = 100;
constexpr int B = 2000;
constexpr int kOne = M - 1;
constexpr int kOneTimesK = kOne - 1;
void construct_instructions(int S, int N, int K, int Q) {
vector<bool> v(B, false);
v[0] = true;
append_store(kOne, v);
for (int i = 0; i < K; ++i) {
v[i] = true;
}
append_store(kOneTimesK, v);
append_right(1, 0, K);
append_and(0, 0, kOneTimesK);
append_not(2, 1);
append_add(2, 2, kOne); // r[2] is 2s complement of a[1].
append_add(2, 0, 2);
append_right(2, 2, B - 1); // r[2] is 0 if a[0] >= a[1], else 1
for (int i = 1; i < K; ++i) {
append_left(3, 2, 1);
append_or(2, 2, 3);
}
append_xor(3, 2, kOneTimesK);
// r[2] is 0 if a[0] >= a[1], else 1 * K
// r[3] is 0 if a[1] > a[0], else 1 * K
append_and(2, 2, 0); // r[2] is 0 if a[0] >= a[1], else a[0]
append_and(3, 3, 1); // r[3] is 0 if a[1] > a[0], else a[1]
append_or(0, 2, 3);
}
|
WA
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"WA"
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[
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] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-flyod_warshall.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
const int n_max = 10100;
bitset<n_max> adj[n_max];
vector<int> permutation;
void init(int k, std::vector<int> r) {
int n = r.size();
permutation.resize(n);
for(int i=0; i<n; i++) {
int streak = -n-1;
for(int j=n-1; j>=0; j--) {
if(r[j]==0) {
streak = 0;
} else {
streak++;
}
if(streak==k-1) {
for(int l=j; l<j+k-1; l++) {
r[l]--;
}
r[j+k-1] = 1e6;
permutation[j+k-1] = i;
break;
}
if(j==0) {
for(int l=0; l<=streak; l++) {
r[l]--;
}
for(int l=n-k+streak+1; l<n; l++) {
r[l]--;
}
r[streak] = 1e6;
permutation[streak] = i;
}
}
}
for(int i=0; i<n; i++) {
for(int j=(i+n-k+1)%n; j!=i; j=(j+1)%n) {
if(permutation[i]<permutation[j]) {
adj[i][j] = true;
} else {
adj[j][i] = true;
}
}
}
for(int l=0; l<n; l++) {
for(int i=0; i<n; i++) {
for(int j=0; j<n; j++) {
adj[i][j] = adj[i][j] || (adj[i][l] && adj[l][j]);
}
}
}
}
int compare_plants(int x, int y) {
if(adj[x][y]) return 1;
if(adj[y][x]) return -1;
return 0;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-return_zero.cpp
|
#include "plants.h"
// just for testing i/o speed
void init(int k, std::vector<int> r) {
return;
}
int compare_plants(int x, int y) {
return 0;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"Wrong Answer\n1st lines differ - on the 1st token, expected: '1', found: '0'\n",
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-scam.cpp
|
#include <bits/stdc++.h>
#define low(i) (i<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)
#define high(i) ((i+1)<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)-1
#define lt_dist(x,y) (y-x+n)%n
using namespace std;
const int total_tries = 5000;
int tries = 0;
const int n_max = 310;
int permutation[total_tries][n_max];
bool adj[n_max][n_max];
void init(int k, std::vector<int> r) {
vector<int> r_copy = r;
int n = r.size();
for(tries=0; tries<total_tries; tries++) {
r = r_copy;
for(int i=0; i<n; i++) {
int offset = rand()%n;
int streak = -n-1;
for(int j=n-1; j>=0; j--) {
if(r[(j+offset)%n]==0) {
streak = 0;
} else {
streak++;
}
if(streak==k-1) {
for(int l=j; l<j+k-1; l++) {
r[(l+offset)%n]--;
}
r[(j+k-1+offset)%n] = 1e6;
permutation[tries][(j+k-1+offset)%n] = i;
break;
}
if(j==0) {
for(int l=0; l<=streak; l++) {
r[(l+offset)%n]--;
}
for(int l=n-k+streak+1; l<n; l++) {
r[(l+offset)%n]--;
}
r[(streak+offset)%n] = 1e6;
permutation[tries][(streak+offset)%n] = i;
}
}
}
}
for(int i=0; i<n; i++) {
for(int j=0; j<n; j++) {
adj[i][j] = true;
for(int l=0; l<total_tries; l++) {
if(permutation[l][i] > permutation[l][j]) {
adj[i][j] = false;
} else {
adj[j][i] = false;
}
}
}
}
}
int compare_plants(int x, int y) {
if(adj[x][y]) return 1;
if(adj[y][x]) return -1;
return 0;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-mountain_valley.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
// subtask 1
vector<int> prefix_sum;
int n;
void init(int k, std::vector<int> r) {
n = r.size();
prefix_sum.push_back(0);
for(int i: r) {
prefix_sum.push_back(prefix_sum.back()+i);
}
}
int compare_plants(int x, int y) {
if(x>y) return -compare_plants(y,x);
if(prefix_sum[x]==prefix_sum[y]) return 1;
if(prefix_sum[y]==prefix_sum[n] && prefix_sum[0]==prefix_sum[x]) return -1;
if(prefix_sum[x]-x==prefix_sum[y]-y) return -1;
if(prefix_sum[y]-y==prefix_sum[n]-n && prefix_sum[0]==prefix_sum[x]-x) return 1;
return 0;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
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[
"RE",
"SKIPPED"
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[
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null
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00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-dfs.cpp
|
#include <bits/stdc++.h>
#define low(i) (i<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)
#define high(i) ((i+1)<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)-1
#define lt_dist(x,y) (y-x+n)%n
using namespace std;
vector<int> permutation;
int n_global;
const int n_bits=20;
const int inf = 1e9;
const int n_max = 2e5;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
int lt[n_max+5];
int rg[n_max+5];
int k_global;
struct segtree {
segtree(){}
void build(vector<int> v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
arr[i+(1<<n_bits)] = (i<v.size() ? v[i] : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
int value(int node) {
arr[node] += lazyadd[node];
if(node<(1<<n_bits)) {
lazyadd[2*node] += lazyadd[node];
lazyadd[2*node+1] += lazyadd[node];
}
lazyadd[node] = 0;
return arr[node];
}
void update(int node, int left, int right, int change) {
if(right>=high(node) && left<=low(node)) {
lazyadd[node] += change;
} else if(right<low(node) || left>high(node)) {
return;
} else {
update(2*node, left, right, change);
update(2*node+1, left, right, change);
arr[node] = min(value(node*2), value(node*2+1));
}
}
void decr(int left, int right) {
update(1, left, right, -1);
}
int find_zero(int node, int lt, int rg) {
if(rg<low(node) || lt>high(node)) {
return -1;
}
if(value(node)!=0) {
return -1;
}
if(node >= (1<<n_bits)) {
return arr[node]==0 ? node-(1<<n_bits) : -1;
}
int x = find_zero(node*2, lt, rg);
if(x!=-1) return x;
return find_zero(node*2+1, lt, rg);
}
};
segtree s;
int ctr = 0;
int n;
int blocking(int rg, int k) {
int lt = rg - k + 1;
if(lt<0) {
int p = s.find_zero(1, lt+n, n-1);
if(p!=-1) {
return p;
}
return s.find_zero(1,0,rg);
} else {
return s.find_zero(1,max(0,lt),rg);
}
}
void pull(int idx, int k) {
int x;
while((x=blocking(idx,k))!=idx) {
pull(x,k);
}
permutation[idx] = ctr;
ctr++;
// decrement the k values before it, and push value in
if(idx >= k-1) {
s.update(1, idx-(k-1), idx, -1);
} else {
s.decr(0, idx);
s.decr(idx-(k-1)+n, n-1);
}
s.update(1, idx, idx, 1e9);
}
int ans[n_max];
void dfs1(int x) {
if(lt[x]!=-1 && ans[lt[x]]==0) {
ans[lt[x]] = 1;
dfs1(lt[x]);
}
if(rg[x]!=-1 && ans[rg[x]]==0) {
ans[rg[x]] = 1;
dfs1(rg[x]);
}
}
vector<int> rev[n_max+5]; // the reverse graph
void dfs2(int x) {
for(int i: rev[x]) {
if(ans[i]==0) {
ans[i] = -1;
dfs2(i);
}
}
}
void init(int k, std::vector<int> r) {
k_global = k;
s.build(r);
n = r.size();
permutation.resize(n);
while(ctr<n) {
int p = s.find_zero(1,0,n-1);
assert(p!=-1);
pull(p,k);
}
map<int,int> m; // store the lt mappings
//key: the global rank, value: the index
for(int i=0; i<k; i++) {
m[permutation[i]] = i;
}
m[(int)1e6] = n;
for(int i=0; i<n; i++) {
auto it = m.upper_bound(permutation[i]);
rg[i] = it->second;
it = m.upper_bound(permutation[(i+k-1)%n]);
lt[(i+k-1)%n] = it->second;
m.erase(permutation[i]);
m[permutation[(i+k)%n]] = (i+k)%n;
}
dfs1(0);
for(int i=0; i<n; i++) {
rev[lt[i]].push_back(i);
rev[rg[i]].push_back(i);
}
dfs2(0);
}
int compare_plants(int x, int y) {
return ans[y];
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"Wrong Answer\n2nd lines differ - on the 1st token, expected: '-1', found: '1'\n",
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-no_2k.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
#define low(i) (i<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)
#define high(i) ((i+1)<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)-1
#define lt_dist(x,y) (y-x+n)%n
using namespace std;
vector<int> permutation;
int n_global;
const int n_bits=20;
const int inf = 1e9;
const int n_max = 2e5;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
int lt[n_max+5];
int rg[n_max+5];
int k_global;
struct segtree {
segtree(){}
void build(vector<int> v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
arr[i+(1<<n_bits)] = (i<v.size() ? v[i] : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
int value(int node) {
arr[node] += lazyadd[node];
if(node<(1<<n_bits)) {
lazyadd[2*node] += lazyadd[node];
lazyadd[2*node+1] += lazyadd[node];
}
lazyadd[node] = 0;
return arr[node];
}
void update(int node, int left, int right, int change) {
if(right>=high(node) && left<=low(node)) {
lazyadd[node] += change;
} else if(right<low(node) || left>high(node)) {
return;
} else {
update(2*node, left, right, change);
update(2*node+1, left, right, change);
arr[node] = min(value(node*2), value(node*2+1));
}
}
void decr(int left, int right) {
update(1, left, right, -1);
}
int query(int node, int left, int right) {
value(node);
if(right>=high(node) && left<=low(node)) {
return arr[node];
} else if(right<low(node) || left>high(node)) {
return inf;
} else {
return min(query(node*2, left, right), query(node*2+1, left, right));
}
}
int find_zero(int node, int lt, int rg) {
if(rg<low(node) || lt>high(node)) {
return -1;
}
if(value(node)!=0) {
return -1;
}
if(node >= (1<<n_bits)) {
return arr[node]==0 ? node-(1<<n_bits) : -1;
}
int x = find_zero(node*2, lt, rg);
if(x!=-1) return x;
return find_zero(node*2+1, lt, rg);
}
};
segtree s;
int ctr = 0;
int n;
vector<int> inv_ht;
int blocking(int rg, int k) {
int lt = rg - k + 1;
if(lt<0) {
int p = s.find_zero(1, lt+n, n-1);
if(p!=-1) {
return p;
}
return s.find_zero(1,0,rg);
} else {
return s.find_zero(1,max(0,lt),rg);
}
}
void pull(int idx, int k) {
int x;
while((x=blocking(idx,k))!=idx) {
pull(x,k);
}
inv_ht.push_back(idx);
permutation[idx] = ctr;
ctr++;
// decrement the k values before it, and push value in
if(idx >= k-1) {
s.update(1, idx-(k-1), idx, -1);
} else {
s.decr(0, idx);
s.decr(idx-(k-1)+n, n-1);
}
s.update(1, idx, idx, 1e9);
}
void init(int k, std::vector<int> r) {
k_global = k;
s.build(r);
n = r.size();
permutation.resize(n);
while(ctr<n) {
int p = s.find_zero(1,0,n-1);
assert(p!=-1);
pull(p,k);
}
vector<int> v(2*n);
for(int &i: v) i=n;
inv_ht.push_back(n);
s.build(v);
for(int i=n-1; i>=0; i--) {
lt[inv_ht[i]] = inv_ht[s.query(1,inv_ht[i]+n-k+1, inv_ht[i]+n)];
rg[inv_ht[i]] = inv_ht[s.query(1,inv_ht[i], inv_ht[i]+k-1)];
s.update(1, inv_ht[i], inv_ht[i], i-n);
s.update(1, inv_ht[i]+n, inv_ht[i]+n, i-n);
}
permutation[n] = n;
}
bool lt_path(int x, int y) {
// scam: move right only a fixed number of iterations
int ctr = 0;
while(lt_dist(x,y)>=k_global && permutation[x]>permutation[y] && ctr<2000) {
y=lt[y];
}
return permutation[y]<permutation[x];
}
bool rg_path(int x, int y) {
// scam: move right only a fixed number of iterations
int ctr = 0;
while(lt_dist(y,x)>=k_global && permutation[x]>permutation[y] && ctr<2000) {
ctr++;
y=rg[y];
}
return permutation[y]<permutation[x];
}
bool path(int x, int y) {
return lt_path(x,y) || rg_path(x,y);
}
int compare_plants(int x, int y) {
if(path(x,y)) return -1;
if(path(y,x)) return 1;
return 0;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-st5_alt.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
const int n_max = 10100;
bitset<n_max> adj[n_max];
void init(int k, std::vector<int> r) {
int n = r.size();
vector<int> cpy = r;
for(int i=0; i<n; i++) {
for(int j=0; j<n; j++) adj[i][j] = true;
for(int l=0; l<n; l++) {
int streak = -5*n-1;
for(int m=2*n-1; m>=0; m--) {
int j=m%n;
if(r[j]==0) {
streak = (i==j ? -5*n-1 : 0);
} else {
streak++;
}
if(streak==k-1) {
for(int l=j; l!=(j+k-1)%n; l=(l+1)%n) {
r[l]--;
assert(r[l]>=0);
}
r[(j+k-1)%n] = 1e6;
adj[i][(j+k-1)%n] = false;
break;
}
if(m==0) streak = (1<<30);
}
if(streak==(1<<30)) break;
}
r = cpy;
}
}
int compare_plants(int x, int y) {
if(adj[x][y]) return 1;
if(adj[y][x]) return -1;
return 0;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-optimized.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
const int n_bits=18;
const int inf = 1e9;
const int n_max = 2e5+5;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
int p_lt[n_max];
int p_rg[n_max];
int stash[n_max]; // a manual queue
int tallest[n_max];
int shortest[n_max];
struct segtree {
int node = 1;
int lazy = 0;
segtree(){}
void build(vector<int> &v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
arr[i+(1<<n_bits)] = (i<(int)v.size() ? v[i] : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
void prefix_update(int x, int change) {
if(x==-1) return;
x += (1<<n_bits);
lazyadd[x] += change;
for(int i=0; i<n_bits; i++) {
if(x&1) {
lazyadd[x-1] += change;
}
arr[x/2] = min(arr[x]+lazyadd[x], arr[x^1]+lazyadd[x^1]);
x=x/2;
}
}
void decr(int left, int right) {
prefix_update(left-1, 1);
prefix_update(right,-1);
}
int find_and_remove_zero() {
node = 1;
lazy = 0;
for(int i=0; i<n_bits; i++) {
lazy += lazyadd[node];
node *= 2;
if(lazy + lazyadd[node] + arr[node]) node++;
}
int ans = node - (1<<n_bits);
lazyadd[node] = 1e9;
for(int i=0; i<n_bits; i++) {
arr[node/2] = min(arr[node]+lazyadd[node], arr[node^1]+lazyadd[node^1]);
node = node/2;
}
return ans;
}
};
void lexi_smallest(int k, vector<int> &r, int* ptr, int* ord) {
segtree s;
s.build(r);
int n = r.size();
stash[0] = n;
ord[n] = -1;
int* fr = stash+1;
int* bk = stash+1;
for(int i=0; i<(int)r.size(); i++) {
while(lazyadd[1] + arr[1]) {
s.decr((*fr++)-k+1+n, n-1);
}
int p = s.find_and_remove_zero();
ord[p] = i;
if(p<k-1) {
s.prefix_update(p, -1);
*bk++ = p;
} else {
s.decr(p-k+1, p);
}
ptr[p] = ord[*(fr-1)];
}
}
void init(int k, std::vector<int> r) {
lexi_smallest(k,r,p_lt, tallest);
for(int &i: r) i = k-1-i;
lexi_smallest(k,r,p_rg, shortest);
}
int compare_plants(int x, int y) {
if(x>y) return -compare_plants(y,x);
if(tallest[x]>tallest[y] || p_rg[y]>=shortest[x]) return -1;
if(shortest[x]>shortest[y] || p_lt[y]>=tallest[x]) return 1;
return 0;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-k_large.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> permutation;
void init(int k, std::vector<int> r) {
int n = r.size();
assert(k*2>n);
permutation.resize(n);
for(int i=0; i<n; i++) {
int streak = -n-1;
for(int j=n-1; j>=0; j--) {
if(r[j]==0) {
streak = 0;
} else {
streak++;
}
if(streak==k-1) {
for(int l=j; l<j+k-1; l++) {
r[l]--;
}
r[j+k-1] = 1e6;
permutation[j+k-1] = i;
break;
}
if(j==0) {
for(int l=0; l<=streak; l++) {
r[l]--;
}
for(int l=n-k+streak+1; l<n; l++) {
r[l]--;
}
r[streak] = 1e6;
permutation[streak] = i;
}
}
}
}
int compare_plants(int x, int y) {
return (permutation[x]<permutation[y] ? 1 : -1);
}
|
RE
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"RE"
] |
[
"Correct\n\n",
"plants: graders/plants.cpp:7: void init(int, std::vector<int>): Assertion `k*2>n' failed.\ntimeout: the monitored command dumped core\n/piston/packages/cms_ioi/1.0.0/run: line 90: 942369 Aborted timeout --preserve-status \"$soft_limit\" \"$@\"\nRuntime error with exit code 134\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-naive_pull.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
#define low(i) (i<<__builtin_clz(i)-31+n_bits)-(1<<n_bits)
#define high(i) ((i+1)<<__builtin_clz(i)-31+n_bits)-(1<<n_bits)-1
using namespace std;
vector<int> permutation;
int n_global;
const int n_bits=20;
const int inf = 1e9;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
struct segtree {
segtree(){}
void build(vector<int> v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
arr[i+(1<<n_bits)] = (i<v.size() ? v[i] : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
int value(int node) {
arr[node] += lazyadd[node];
if(node<(1<<n_bits)) {
lazyadd[2*node] += lazyadd[node];
lazyadd[2*node+1] += lazyadd[node];
}
lazyadd[node] = 0;
return arr[node];
}
void update(int node, int left, int right, int change) {
if(right>=high(node) && left<=low(node)) {
lazyadd[node] += change;
} else if(right<low(node) || left>high(node)) {
return;
} else {
update(2*node, left, right, change);
update(2*node+1, left, right, change);
arr[node] = min(value(node*2), value(node*2+1));
}
}
void decr(int left, int right) {
update(1, left, right, -1);
}
int find_zero(int node, int lt, int rg) {
if(rg<low(node) || lt>high(node)) {
return -1;
}
if(value(node)!=0) {
return -1;
}
if(node >= (1<<n_bits)) {
return arr[node]==0 ? node-(1<<n_bits) : -1;
}
int x = find_zero(node*2, lt, rg);
if(x!=-1) return x;
return find_zero(node*2+1, lt, rg);
}
};
segtree s;
int ctr = 0;
int n;
int blocking(int rg, int k) {
int lt = rg - k + 1;
if(lt<0) {
int p = s.find_zero(1, lt+n, n-1);
if(p!=-1) {
return p;
}
return s.find_zero(1,0,rg);
} else {
return s.find_zero(1,max(0,lt),rg);
}
}
void pull(int idx, int k) {
int x;
while((x=blocking(idx,k))!=idx) {
idx = x; // complexity: O(n^2/k) in theory, but I am unable to construct such test case
}
permutation[idx] = ctr;
ctr++;
// decrement the k values before it, and push value in
if(idx >= k-1) {
s.update(1, idx-(k-1), idx, -1);
} else {
s.decr(0, idx);
s.decr(idx-(k-1)+n, n-1);
}
s.update(1, idx, idx, 1e9);
}
void init(int k, std::vector<int> r) {
s.build(r);
n = r.size();
permutation.resize(n);
while(ctr<n) {
int p = s.find_zero(1,0,n-1);
assert(p!=-1);
pull(p,k);
}
}
int compare_plants(int x, int y) {
return (permutation[x]<permutation[y] ? 1 : -1);
}
|
RE
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"RE"
] |
[
"Correct\n\n",
"Wrong Answer\n2nd lines differ - on the 1st token, expected: '0', found: '1'\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-bfs.cpp
|
#include <bits/stdc++.h>
#define low(i) (i<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)
#define high(i) ((i+1)<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)-1
using namespace std;
vector<int> permutation;
int n_global;
const int n_bits=20;
const int inf = 1e9;
const int n_max = 2e5;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
int lt[n_max+5];
int rg[n_max+5];
int k_global;
struct segtree {
segtree(){}
void build(vector<int> v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
arr[i+(1<<n_bits)] = (i<v.size() ? v[i] : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
int value(int node) {
arr[node] += lazyadd[node];
if(node<(1<<n_bits)) {
lazyadd[2*node] += lazyadd[node];
lazyadd[2*node+1] += lazyadd[node];
}
lazyadd[node] = 0;
return arr[node];
}
void update(int node, int left, int right, int change) {
if(right>=high(node) && left<=low(node)) {
lazyadd[node] += change;
} else if(right<low(node) || left>high(node)) {
return;
} else {
update(2*node, left, right, change);
update(2*node+1, left, right, change);
arr[node] = min(value(node*2), value(node*2+1));
}
}
void decr(int left, int right) {
update(1, left, right, -1);
}
int find_zero(int node, int lt, int rg) {
if(rg<low(node) || lt>high(node)) {
return -1;
}
if(value(node)!=0) {
return -1;
}
if(node >= (1<<n_bits)) {
return arr[node]==0 ? node-(1<<n_bits) : -1;
}
int x = find_zero(node*2, lt, rg);
if(x!=-1) return x;
return find_zero(node*2+1, lt, rg);
}
};
segtree s;
int ctr = 0;
int n;
int blocking(int rg, int k) {
int lt = rg - k + 1;
if(lt<0) {
int p = s.find_zero(1, lt+n, n-1);
if(p!=-1) {
return p;
}
return s.find_zero(1,0,rg);
} else {
return s.find_zero(1,max(0,lt),rg);
}
}
void pull(int idx, int k) {
int x;
while((x=blocking(idx,k))!=idx) {
pull(x,k);
}
permutation[idx] = ctr;
ctr++;
// decrement the k values before it, and push value in
if(idx >= k-1) {
s.update(1, idx-(k-1), idx, -1);
} else {
s.decr(0, idx);
s.decr(idx-(k-1)+n, n-1);
}
s.update(1, idx, idx, 1e9);
}
int ans[n_max];
void init(int k, std::vector<int> r) {
k_global = k;
s.build(r);
n = r.size();
permutation.resize(n);
while(ctr<n) {
int p = s.find_zero(1,0,n-1);
assert(p!=-1);
pull(p,k);
}
map<int,int> m; // store the lt mappings
//key: the global rank, value: the index
for(int i=0; i<k; i++) {
m[permutation[i]] = i;
}
m[(int)1e6] = n;
for(int i=0; i<n; i++) {
auto it = m.upper_bound(permutation[i]);
rg[i] = it->second;
it = m.upper_bound(permutation[(i+k-1)%n]);
lt[(i+k-1)%n] = it->second;
m.erase(permutation[i]);
m[permutation[(i+k)%n]] = (i+k)%n;
}
queue<int> bfs;
bfs.push(0);
while(!bfs.empty()) {
int next = bfs.front();
bfs.pop();
if(lt[next]!=-1 && ans[lt[next]]==0) {
ans[lt[next]] = 1;
bfs.push(lt[next]);
}
if(rg[next]!=-1 && ans[rg[next]]==0) {
ans[rg[next]] = 1;
bfs.push(rg[next]);
}
}
vector<int> rev[n]; // the reverse graph
for(int i=0; i<n; i++) {
if(lt[i]!=-1 && lt[i]!=n) {
rev[lt[i]].push_back(i);
}
if(rg[i]!=-1 && rg[i]!=n) {
rev[rg[i]].push_back(i);
}
}
ans[0] = 0;
bfs.push(0);
while(!bfs.empty()) {
int next = bfs.front();
bfs.pop();
for(int i: rev[next]) {
if(ans[i]==0) {
ans[i] = -1;
bfs.push(i);
}
}
}
}
int compare_plants(int x, int y) {
return ans[y];
}
|
RE
| 0 | 0 | 0 |
[
0,
0
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[
"RE",
"SKIPPED"
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[
"Wrong Answer\n2nd lines differ - on the 1st token, expected: '-1', found: '1'\n",
null
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00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-always_comparable.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
#define low(i) (i<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)
#define high(i) ((i+1)<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)-1
using namespace std;
vector<int> permutation;
int n_global;
const int n_bits=20;
const int inf = 1e9;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
struct segtree {
segtree(){}
void build(vector<int> v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
arr[i+(1<<n_bits)] = (i<v.size() ? v[i] : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
int value(int node) {
arr[node] += lazyadd[node];
if(node<(1<<n_bits)) {
lazyadd[2*node] += lazyadd[node];
lazyadd[2*node+1] += lazyadd[node];
}
lazyadd[node] = 0;
return arr[node];
}
void update(int node, int left, int right, int change) {
if(right>=high(node) && left<=low(node)) {
lazyadd[node] += change;
} else if(right<low(node) || left>high(node)) {
return;
} else {
update(2*node, left, right, change);
update(2*node+1, left, right, change);
arr[node] = min(value(node*2), value(node*2+1));
}
}
void decr(int left, int right) {
update(1, left, right, -1);
}
int find_zero(int node, int lt, int rg) {
if(rg<low(node) || lt>high(node)) {
return -1;
}
if(value(node)!=0) {
return -1;
}
if(node >= (1<<n_bits)) {
return arr[node]==0 ? node-(1<<n_bits) : -1;
}
int x = find_zero(node*2, lt, rg);
if(x!=-1) return x;
return find_zero(node*2+1, lt, rg);
}
};
segtree s;
int ctr = 0;
int n;
int blocking(int rg, int k) {
int lt = rg - k + 1;
if(lt<0) {
int p = s.find_zero(1, lt+n, n-1);
if(p!=-1) {
return p;
}
return s.find_zero(1,0,rg);
} else {
return s.find_zero(1,max(0,lt),rg);
}
}
void pull(int idx, int k) {
int x;
while((x=blocking(idx,k))!=idx) {
pull(x,k);
}
permutation[idx] = ctr;
ctr++;
// decrement the k values before it, and push value in
if(idx >= k-1) {
s.update(1, idx-(k-1), idx, -1);
} else {
s.decr(0, idx);
s.decr(idx-(k-1)+n, n-1);
}
s.update(1, idx, idx, 1e9);
}
void init(int k, std::vector<int> r) {
s.build(r);
n = r.size();
permutation.resize(n);
while(ctr<n) {
int p = s.find_zero(1,0,n-1);
assert(p!=-1);
pull(p,k);
}
}
int compare_plants(int x, int y) {
return (permutation[x]<permutation[y] ? 1 : -1);
}
|
RE
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"RE"
] |
[
"Correct\n\n",
"Wrong Answer\n2nd lines differ - on the 1st token, expected: '0', found: '1'\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-many_permutations.cpp
|
#include <bits/stdc++.h>
#define low(i) (i<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)
#define high(i) ((i+1)<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)-1
#define lt_dist(x,y) (y-x+n)%n
using namespace std;
int n;
const int n_max = 10100;
int permutation[n_max][n_max];
int k_global;
void init(int k, std::vector<int> r) {
vector<int> r_copy = r;
n = r.size();
k_global = k;
for(int offset=0; offset<n; offset+=k) {
r = r_copy;
for(int i=0; i<n; i++) {
int streak = -n-1;
for(int j=n-1; j>=0; j--) {
if(r[(j+offset)%n]==0) {
streak = 0;
} else {
streak++;
}
if(streak==k-1) {
for(int l=j; l<j+k-1; l++) {
r[(l+offset)%n]--;
}
r[(j+k-1+offset)%n] = 1e6;
permutation[offset][(j+k-1+offset)%n] = i;
break;
}
if(j==0) {
for(int l=0; l<=streak; l++) {
r[(l+offset)%n]--;
}
for(int l=n-k+streak+1; l<n; l++) {
r[(l+offset)%n]--;
}
r[(streak+offset)%n] = 1e6;
permutation[offset][(streak+offset)%n] = i;
}
}
}
}
}
int compare_plants(int x, int y) {
bool all0 = true;
bool all1 = true;
for(int i=0; i<n; i+=k_global) {
if(permutation[i][x] > permutation[i][y]) {
all0 = false;
} else {
all1 = false;
}
}
if(all0) return 1;
if(all1) return -1;
return 0;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-k_large_segtree.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> permutation;
static const int n_bits=20;
const pair<int,int> inf = make_pair(1e9,0);
pair<int,int> arr[1<<(n_bits+1)];
int low[1<<(n_bits+1)];
int high[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
struct segtree {
segtree(){}
void build(vector<int> v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
low[i+(1<<n_bits)] = i;
high[i+(1<<n_bits)] = i;
arr[i+(1<<n_bits)] = (i<v.size() ? make_pair(v[i],i) : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
low[i] = min(low[2*i], low[2*i+1]);
high[i] = max(high[2*i], high[2*i+1]);
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
pair<int,int> value(int node) {
arr[node].first += lazyadd[node];
if(node<(1<<n_bits)) {
lazyadd[2*node] += lazyadd[node];
lazyadd[2*node+1] += lazyadd[node];
}
lazyadd[node] = 0;
return arr[node];
}
void update(int node, int left, int right, int change) {
if(right>=high[node] && left<=low[node]) {
lazyadd[node] += change;
} else if(right<low[node] || left>high[node]) {
return;
} else {
update(2*node, left, right, change);
update(2*node+1, left, right, change);
arr[node] = min(value(node*2), value(node*2+1));
}
}
pair<int,int> query(int node, int left, int right) {
value(node);
if(right>=high[node] && left<=low[node]) {
return arr[node];
} else if(right<low[node] || left>high[node]) {
return inf;
} else {
return min(query(node*2, left, right), query(node*2+1, left, right));
}
}
pair<int,int> smallest() {
return query(1, 0, 1<<n_bits);
}
void decr(int left, int right) {
update(1, left, right, -1);
}
};
void init(int k, std::vector<int> r) {
segtree s;
s.build(r);
int n = r.size();
assert(k*2>n);
permutation.resize(n);
for(int i=0; i<n; i++) {
pair<int,int> p = s.smallest();
assert(p.first==0);
int x = p.second;
if(x<k-1) {
pair<int,int> q = s.query(1, n-k+x+1, n-1);
if(q.first==0) {
x = q.second;
}
}
s.update(1, x, x, 1e9);
permutation[x] = i;
if(x>=k-1) {
s.decr(x-k+1, x);
} else {
s.decr(0, x);
s.decr(n-k+x+1, n-1);
}
}
}
int compare_plants(int x, int y) {
return (permutation[x]<permutation[y] ? 1 : -1);
}
|
RE
| 0 | 0 | 0 |
[
1,
0
] |
[
"AC",
"RE"
] |
[
"Correct\n\n",
"plants: graders/plants.cpp:72: void init(int, std::vector<int>): Assertion `k*2>n' failed.\ntimeout: the monitored command dumped core\n/piston/packages/cms_ioi/1.0.0/run: line 90: 2001933 Aborted timeout --preserve-status \"$soft_limit\" \"$@\"\nRuntime error with exit code 134\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-original-ac.cpp
|
#include<cstdio>
#include<algorithm>
#include<cassert>
#include<set>
#define N_ 251000
#define SZ 262144
#include <vector>
using namespace std;
int n, K, Rank[N_], w[N_], V[N_];
struct Tree {
int K[SZ + SZ], Mn[SZ + SZ];
void UDT(int nd) {
Mn[nd] = min(Mn[nd * 2], Mn[nd * 2 + 1]);
}
void init(int nd, int b, int e) {
K[nd] = 0;
if (b == e) {
Mn[nd] = Rank[b] - 1;
return;
}
int m = (b + e) >> 1;
init(nd * 2, b, m);
init(nd * 2 + 1, m + 1, e);
UDT(nd);
}
void Add2(int nd, int x) {
K[nd] += x;
Mn[nd] += x;
}
void Spread(int nd) {
Add2(nd * 2, K[nd]);
Add2(nd * 2 + 1, K[nd]);
K[nd] = 0;
}
void Add(int nd, int b, int e, int s, int l, int x) {
if (s > l)return;
if (s <= b && e <= l) {
Add2(nd, x);
return;
}
Spread(nd);
int m = (b + e) >> 1;
if (s <= m)Add(nd * 2, b, m, s, l, x);
if (l > m)Add(nd * 2 + 1, m + 1, e, s, l, x);
UDT(nd);
}
void Put(int nd, int b, int e, int x, int y) {
if (b == e) {
Mn[nd] = y;
return;
}
Spread(nd);
int m = (b + e) >> 1;
if (x <= m)Put(nd * 2, b, m, x, y);
else Put(nd * 2 + 1, m + 1, e, x, y);
UDT(nd);
}
int FZ(int nd, int b, int e) {
if (b == e)return b;
Spread(nd);
int m = (b + e) >> 1;
if (!Mn[nd * 2])return FZ(nd * 2, b, m);
return FZ(nd * 2 + 1, m + 1, e);
}
int FindZero() {
if (Mn[1])return 0;
return FZ(1, 1, n);
}
}IT;
set<int>Set, Good;
void Ins(int a) {
Set.insert(a);
auto it = Set.find(a);
int nxt, prv;
if (next(it) != Set.end())nxt = *(next(it));
else nxt = (*Set.begin()) + n;
if (it != Set.begin())prv = *(prev(it));
else prv = (*prev(Set.end())) - n;
if (nxt - a >= K) {
int t = (nxt - 1) % n + 1;
Good.insert(t);
}
else {
int t = (nxt - 1) % n + 1;
if (Good.find(t) != Good.end()) Good.erase(t);
}
if (a - prv >= K) {
Good.insert(a);
}
}
void Del(int a) {
auto it = Set.find(a);
int nxt, prv;
if (next(it) != Set.end())nxt = *(next(it));
else nxt = (*Set.begin()) + n;
if (it != Set.begin())prv = *(prev(it));
else prv = (*prev(Set.end())) - n;
Set.erase(a);
if (Good.find(a) != Good.end())Good.erase(a);
if (!Set.empty() && nxt - prv >= K) {
Good.insert((nxt - 1) % n + 1);
}
}
int BIT[N_];
void Add(int a, int b) {
while (a < N_) {
BIT[a] += b;
a += (a&-a);
}
}
int Sum(int a) {
int r = 0;
while (a) {
r += BIT[a];
a -= (a&-a);
}
return r;
}
long long Right[N_][20], Left[N_][20], INF = 1e9;
bool RightPath(int a, int b) {
int d = (b - a + n) % n;
int i;
for (i = 17; i >= 0; i--) {
if (d >= Right[a][i]) {
d -= Right[a][i];
a = (a + Right[a][i] - 1) % n + 1;
}
}
if ((b - a + n) % n < K && V[a] <= V[b])return true;
return false;
}
bool LeftPath(int a, int b) {
int d = (a - b + n) % n;
int i;
for (i = 17; i >= 0; i--) {
if (d >= Left[a][i]) {
d -= Left[a][i];
a = (a - Left[a][i] - 1 + n) % n + 1;
}
}
if ((a - b + n) % n < K && V[a] <= V[b])return true;
return false;
}
bool Path(int a, int b) {
return RightPath(a, b) || LeftPath(a, b);
}
int compare_plants(int a, int b) {
a++;
b++;
if (Path(a, b)) return 1;
else if (Path(b, a)) return -1;
else return 0;
}
void Do() {
int i, j;
for (i = 0; i < N_; i++)BIT[i] = 0;
for (i = 1; i <= K; i++) {
Add(V[i], 1);
}
for (i = 1; i <= n; i++) {
int b = V[i] + 1, e = n, mid, r = 0, s = Sum(V[i]);
while (b <= e) {
mid = (b + e) >> 1;
if (Sum(mid) > s) {
r = mid;
e = mid - 1;
}
else b = mid + 1;
}
if (r) {
r = w[r];
Right[i][0] = (r - i + n) % n;
}
else Right[i][0] = INF;
Add(V[i], -1);
Add(V[(i + K - 1) % n + 1], 1);
}
for (i = 0; i < N_; i++)BIT[i] = 0;
for (i = n; i > n - K; i--) {
Add(V[i], 1);
}
for (i = n; i >= 1; i--) {
int b = V[i] + 1, e = n, mid, r = 0, s = Sum(V[i]);
while (b <= e) {
mid = (b + e) >> 1;
if (Sum(mid) > s) {
r = mid;
e = mid - 1;
}
else b = mid + 1;
}
if (r) {
r = w[r];
Left[i][0] = (i - r + n) % n;
}
else Left[i][0] = INF;
Add(V[i], -1);
Add(V[(i - K + n - 1) % n + 1], 1);
}
for (i = 0; i < 18; i++) {
for (j = 1; j <= n; j++) {
if (Right[j][i] >= INF) {
Right[j][i + 1] = INF;
}
else {
int t = (j + Right[j][i] - 1) % n + 1;
Right[j][i + 1] = min(INF, Right[t][i] + Right[j][i]);
}
if (Left[j][i] >= INF) {
Left[j][i + 1] = INF;
}
else {
int t = (j - Left[j][i] % n - 1 + n) % n + 1;
Left[j][i + 1] = min(INF, Left[t][i] + Left[j][i]);
}
}
}
}
void init(int k, vector<int> r) {
n = r.size();
K = k;
int i;
for(i=0; i<n; i++) {
Rank[i+1] = r[i]+1;
}
IT.init(1, 1, n);
for (i = 1; i <= n; i++) {
int t;
while ((t = IT.FindZero())) {
Ins(t);
IT.Put(1, 1, n, t, INF);
}
assert(!Good.empty());
int a = *Good.begin();
w[i] = a;
V[a] = i;
IT.Add(1, 1, n, max(a - K + 1, 1), a - 1, -1);
IT.Add(1, 1, n, a - K + 1 + n, min(a - 1 + n, n), -1);
Del(a);
}
for (i = 1; i <= K; i++) Add(V[i], 1);
for (i = 1; i <= n; i++) {
assert(Sum(V[i]) == Rank[i]);
Add(V[i], -1);
Add(V[(i + K - 1) % n + 1], 1);
}
Do();
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-sqrt.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
#define low(i) (i<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)
#define high(i) ((i+1)<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)-1
#define lt_dist(x,y) (y-x+n)%n
using namespace std;
vector<int> permutation;
int n_global;
const int n_bits=20;
const int inf = 1e9;
const int n_max = 2e5;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
int lt[n_max+5];
int rg[n_max+5];
int sqrt_lt[n_max+5];
int sqrt_rg[n_max+5];
int k_global;
struct segtree {
segtree(){}
void build(vector<int> v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
arr[i+(1<<n_bits)] = (i<v.size() ? v[i] : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
int value(int node) {
arr[node] += lazyadd[node];
if(node<(1<<n_bits)) {
lazyadd[2*node] += lazyadd[node];
lazyadd[2*node+1] += lazyadd[node];
}
lazyadd[node] = 0;
return arr[node];
}
void update(int node, int left, int right, int change) {
if(right>=high(node) && left<=low(node)) {
lazyadd[node] += change;
} else if(right<low(node) || left>high(node)) {
return;
} else {
update(2*node, left, right, change);
update(2*node+1, left, right, change);
arr[node] = min(value(node*2), value(node*2+1));
}
}
void decr(int left, int right) {
update(1, left, right, -1);
}
int query(int node, int left, int right) {
value(node);
if(right>=high(node) && left<=low(node)) {
return arr[node];
} else if(right<low(node) || left>high(node)) {
return inf;
} else {
return min(query(node*2, left, right), query(node*2+1, left, right));
}
}
int find_zero(int node, int lt, int rg) {
if(rg<low(node) || lt>high(node)) {
return -1;
}
if(value(node)!=0) {
return -1;
}
if(node >= (1<<n_bits)) {
return arr[node]==0 ? node-(1<<n_bits) : -1;
}
int x = find_zero(node*2, lt, rg);
if(x!=-1) return x;
return find_zero(node*2+1, lt, rg);
}
};
segtree s;
int ctr = 0;
int n;
vector<int> inv_ht;
int blocking(int rg, int k) {
int lt = rg - k + 1;
if(lt<0) {
int p = s.find_zero(1, lt+n, n-1);
if(p!=-1) {
return p;
}
return s.find_zero(1,0,rg);
} else {
return s.find_zero(1,max(0,lt),rg);
}
}
void pull(int idx, int k) {
int x;
while((x=blocking(idx,k))!=idx) {
pull(x,k);
}
inv_ht.push_back(idx);
permutation[idx] = ctr;
ctr++;
// decrement the k values before it, and push value in
if(idx >= k-1) {
s.update(1, idx-(k-1), idx, -1);
} else {
s.decr(0, idx);
s.decr(idx-(k-1)+n, n-1);
}
s.update(1, idx, idx, 1e9);
}
void init(int k, std::vector<int> r) {
k_global = k;
s.build(r);
n = r.size();
permutation.resize(n);
while(ctr<n) {
int p = s.find_zero(1,0,n-1);
assert(p!=-1);
pull(p,k);
}
vector<int> v(2*n);
for(int &i: v) i=n;
inv_ht.push_back(n);
s.build(v);
for(int i=n-1; i>=0; i--) {
lt[inv_ht[i]] = inv_ht[s.query(1,inv_ht[i]+n-k+1, inv_ht[i]+n)];
rg[inv_ht[i]] = inv_ht[s.query(1,inv_ht[i], inv_ht[i]+k-1)];
s.update(1, inv_ht[i], inv_ht[i], i-n);
s.update(1, inv_ht[i]+n, inv_ht[i]+n, i-n);
}
if(n>5000 && k<=n/2) {
for(int i=0; i<n; i++) {
sqrt_lt[i] = lt[i];
sqrt_rg[i] = rg[i];
}
sqrt_lt[n] = n;
sqrt_rg[n] = n;
for(int i=0; i<n; i++) {
while(lt_dist(sqrt_lt[i],i)<500 && sqrt_lt[i]!=n) {
sqrt_lt[i] = lt[sqrt_lt[i]];
}
while(lt_dist(i,sqrt_rg[i])<500 && sqrt_rg[i]!=n) {
sqrt_rg[i] = rg[sqrt_rg[i]];
}
}
}
}
bool lt_path(int x, int y) {
if(n>5000 && k_global<=n/2) {
while(lt_dist(x,y)>=500+k_global && sqrt_lt[y]!=n) {
y = sqrt_lt[y];
}
}
while(lt_dist(x,y)>=k_global) {
y=lt[y];
if(y==n) return false;
}
return permutation[y]<permutation[x];
}
bool rg_path(int x, int y) {
if(n>5000 && k_global<=n/2) {
while(lt_dist(y,x)>=500+k_global && sqrt_rg[y]!=n) {
y = sqrt_rg[y];
}
}
while(lt_dist(y,x)>=k_global) {
y=rg[y];
if(y==n) return false;
}
return permutation[y]<permutation[x];
}
bool path(int x, int y) {
return lt_path(x,y) || rg_path(x,y);
}
int compare_plants(int x, int y) {
if(path(x,y)) return -1;
if(path(y,x)) return 1;
return 0;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-sqrt_opt.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
#define low(i) (i<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)
#define high(i) ((i+1)<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)-1
#define lt_dist(x,y) (y-x+n)%n
using namespace std;
vector<int> permutation;
int n_global;
const int n_bits=20;
const int inf = 1e9;
const int n_max = 2e5;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
int lt[n_max+5];
int rg[n_max+5];
int sqrt_lt[n_max+5];
int sqrt_rg[n_max+5];
int k_global;
struct segtree {
segtree(){}
void build(vector<int> v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
arr[i+(1<<n_bits)] = (i<v.size() ? v[i] : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
int value(int node) {
arr[node] += lazyadd[node];
if(node<(1<<n_bits)) {
lazyadd[2*node] += lazyadd[node];
lazyadd[2*node+1] += lazyadd[node];
}
lazyadd[node] = 0;
return arr[node];
}
void update(int node, int left, int right, int change) {
if(right>=high(node) && left<=low(node)) {
lazyadd[node] += change;
} else if(right<low(node) || left>high(node)) {
return;
} else {
update(2*node, left, right, change);
update(2*node+1, left, right, change);
arr[node] = min(value(node*2), value(node*2+1));
}
}
void decr(int left, int right) {
update(1, left, right, -1);
}
int query(int node, int left, int right) {
value(node);
if(right>=high(node) && left<=low(node)) {
return arr[node];
} else if(right<low(node) || left>high(node)) {
return inf;
} else {
return min(query(node*2, left, right), query(node*2+1, left, right));
}
}
int find_zero(int node, int lt, int rg) {
if(rg<low(node) || lt>high(node)) {
return -1;
}
if(value(node)!=0) {
return -1;
}
if(node >= (1<<n_bits)) {
return arr[node]==0 ? node-(1<<n_bits) : -1;
}
int x = find_zero(node*2, lt, rg);
if(x!=-1) return x;
return find_zero(node*2+1, lt, rg);
}
};
segtree s;
int ctr = 0;
int n;
vector<int> inv_ht;
int blocking(int rg, int k) {
int lt = rg - k + 1;
if(lt<0) {
int p = s.find_zero(1, lt+n, n-1);
if(p!=-1) {
return p;
}
return s.find_zero(1,0,rg);
} else {
return s.find_zero(1,max(0,lt),rg);
}
}
void pull(int idx, int k) {
int x;
while((x=blocking(idx,k))!=idx) {
pull(x,k);
}
inv_ht.push_back(idx);
permutation[idx] = ctr;
ctr++;
// decrement the k values before it, and push value in
if(idx >= k-1) {
s.update(1, idx-(k-1), idx, -1);
} else {
s.decr(0, idx);
s.decr(idx-(k-1)+n, n-1);
}
s.update(1, idx, idx, 1e9);
}
void init(int k, std::vector<int> r) {
k_global = k;
s.build(r);
n = r.size();
permutation.resize(n);
while(ctr<n) {
int p = s.find_zero(1,0,n-1);
assert(p!=-1);
pull(p,k);
}
vector<int> v(2*n);
for(int &i: v) i=n;
inv_ht.push_back(n);
s.build(v);
for(int i=n-1; i>=0; i--) {
lt[inv_ht[i]] = inv_ht[s.query(1,inv_ht[i]+n-k+1, inv_ht[i]+n)];
rg[inv_ht[i]] = inv_ht[s.query(1,inv_ht[i], inv_ht[i]+k-1)];
s.update(1, inv_ht[i], inv_ht[i], i-n);
s.update(1, inv_ht[i]+n, inv_ht[i]+n, i-n);
}
if(n>5000 && k<=n/2) {
for(int i=0; i<n; i++) {
sqrt_lt[i] = lt[i];
sqrt_rg[i] = rg[i];
}
sqrt_lt[n] = n;
sqrt_rg[n] = n;
for(int i=0; i<n; i++) {
while(lt_dist(sqrt_lt[i],i)<2000 && sqrt_lt[i]!=n) {
sqrt_lt[i] = lt[sqrt_lt[i]];
}
while(lt_dist(i,sqrt_rg[i])<2000 && sqrt_rg[i]!=n) {
sqrt_rg[i] = rg[sqrt_rg[i]];
}
}
}
}
bool lt_path(int x, int y) {
if(n>5000 && k_global<=n/2) {
while(lt_dist(x,y)>=2000+k_global && sqrt_lt[y]!=n) {
y = sqrt_lt[y];
if(permutation[y]>permutation[x]) return false;
}
}
while(lt_dist(x,y)>=k_global) {
y=lt[y];
if(y==n) return false;
}
return permutation[y]<permutation[x];
}
bool rg_path(int x, int y) {
if(n>5000 && k_global<=n/2) {
while(lt_dist(y,x)>=2000+k_global && sqrt_rg[y]!=n) {
y = sqrt_rg[y];
if(permutation[y]>permutation[x]) return false;
}
}
while(lt_dist(y,x)>=k_global) {
y=rg[y];
if(y==n) return false;
}
return permutation[y]<permutation[x];
}
bool path(int x, int y) {
return lt_path(x,y) || rg_path(x,y);
}
int compare_plants(int x, int y) {
if(permutation[x]>permutation[y] && path(x,y)) return -1;
if(permutation[y]>permutation[x] && path(y,x)) return 1;
return 0;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-ac.cpp
|
#include "plants.h"
#include <bits/stdc++.h>
#define low(i) (i<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)
#define high(i) ((i+1)<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)-1
using namespace std;
vector<int> tallest;
vector<int> shortest;
int n_global;
const int n_bits=20;
const int inf = 1e9;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
struct segtree {
segtree(){}
void build(vector<int> v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
arr[i+(1<<n_bits)] = (i<(int)v.size() ? v[i] : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
int value(int node) {
arr[node] += lazyadd[node];
if(node<(1<<n_bits)) {
lazyadd[2*node] += lazyadd[node];
lazyadd[2*node+1] += lazyadd[node];
}
lazyadd[node] = 0;
return arr[node];
}
void update(int node, int left, int right, int change) {
if(right>=high(node) && left<=low(node)) {
lazyadd[node] += change;
} else if(right<low(node) || left>high(node)) {
return;
} else {
update(2*node, left, right, change);
update(2*node+1, left, right, change);
arr[node] = min(value(node*2), value(node*2+1));
}
}
void decr(int left, int right) {
update(1, left, right, -1);
}
int find_zero(int node) {
if(value(node)!=0) {
return -1;
}
if(node >= (1<<n_bits)) {
return arr[node]==0 ? node-(1<<n_bits) : -1;
}
int x = find_zero(node*2);
if(x!=-1) return x;
return find_zero(node*2+1);
}
};
// gives you the lexi smallest ordering given the doubled array r
vector<int> lexi_smallest(int k, vector<int> r) {
segtree s;
s.build(r);
vector<int> ret;
ret.resize(r.size());
queue<int> stash;
for(int i=0; i<(int)r.size(); i++) {
int p = s.find_zero(1);
while(p==-1) {
s.decr(stash.front(), 2*n_global-1);
p = s.find_zero(1);
stash.pop();
}
ret[p] = i;
s.update(1, p, p, 1e9);
s.decr(max(0, p-k+1), p);
if(p<k-1) {
stash.push(p-k+1+2*n_global);
}
}
return ret;
}
void init(int k, std::vector<int> r) {
n_global = r.size();
for(int i=0; i<n_global; i++) {
r.push_back(r[i]);
}
tallest = lexi_smallest(k,r);
for(int &i: r) i = k-1-i;
shortest = lexi_smallest(k,r);
}
int compare_plants(int x, int y) {
if(x>y) return -compare_plants(y,x);
if(tallest[x]>tallest[y] || shortest[y]>shortest[x+n_global]) return -1;
if(shortest[x]>shortest[y] || tallest[y]>tallest[x+n_global]) return 1;
return 0;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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2020
|
day1
|
Comparing Plants
|
plants
|
plants-yanhao-postorder.cpp
|
#include <bits/stdc++.h>
#define low(i) (i<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)
#define high(i) ((i+1)<<(__builtin_clz(i)-31+n_bits))-(1<<n_bits)-1
#define lt_dist(x,y) (y-x+n)%n
using namespace std;
vector<int> permutation;
int n_global;
const int n_bits=20;
const int inf = 1e9;
const int n_max = 2e5;
int arr[1<<(n_bits+1)];
int lazyadd[1<<(n_bits+1)];
int lt[n_max+5];
int rg[n_max+5];
int k_global;
struct segtree {
segtree(){}
void build(vector<int> v) {
assert(v.size()<(1<<n_bits));
for(int i=0; i<(1<<n_bits); i++) {
arr[i+(1<<n_bits)] = (i<v.size() ? v[i] : inf);
}
for(int i=(1<<n_bits)-1; i>=1; i--) {
arr[i] = min(arr[2*i], arr[2*i+1]);
}
for(int i=0; i<(1<<(n_bits+1)); i++) {
lazyadd[i] = 0;
}
}
int value(int node) {
arr[node] += lazyadd[node];
if(node<(1<<n_bits)) {
lazyadd[2*node] += lazyadd[node];
lazyadd[2*node+1] += lazyadd[node];
}
lazyadd[node] = 0;
return arr[node];
}
void update(int node, int left, int right, int change) {
if(right>=high(node) && left<=low(node)) {
lazyadd[node] += change;
} else if(right<low(node) || left>high(node)) {
return;
} else {
update(2*node, left, right, change);
update(2*node+1, left, right, change);
arr[node] = min(value(node*2), value(node*2+1));
}
}
void decr(int left, int right) {
update(1, left, right, -1);
}
int find_zero(int node, int lt, int rg) {
if(rg<low(node) || lt>high(node)) {
return -1;
}
if(value(node)!=0) {
return -1;
}
if(node >= (1<<n_bits)) {
return arr[node]==0 ? node-(1<<n_bits) : -1;
}
int x = find_zero(node*2, lt, rg);
if(x!=-1) return x;
return find_zero(node*2+1, lt, rg);
}
};
segtree s;
int ctr = 0;
int n;
vector<int> inv_ht;
int blocking(int rg, int k) {
int lt = rg - k + 1;
if(lt<0) {
int p = s.find_zero(1, lt+n, n-1);
if(p!=-1) {
return p;
}
return s.find_zero(1,0,rg);
} else {
return s.find_zero(1,max(0,lt),rg);
}
}
void pull(int idx, int k) {
int x;
while((x=blocking(idx,k))!=idx) {
pull(x,k);
}
inv_ht.push_back(idx);
permutation[idx] = ctr;
ctr++;
// decrement the k values before it, and push value in
if(idx >= k-1) {
s.update(1, idx-(k-1), idx, -1);
} else {
s.decr(0, idx);
s.decr(idx-(k-1)+n, n-1);
}
s.update(1, idx, idx, 1e9);
}
vector<int> rg_adj[n_max+5];
vector<int> lt_adj[n_max+5];
int lt_postorder[n_max+5];
int rg_postorder[n_max+5];
void lt_dfs(int x) {
for(int i: lt_adj[x]) {
lt_dfs(i);
}
lt_postorder[x] = ctr;
ctr++;
}
void rg_dfs(int x) {
for(int i: rg_adj[x]) {
rg_dfs(i);
}
rg_postorder[x] = ctr;
ctr++;
}
bool cmp(int x, int y) {
if(abs(x-y)<k_global) {
return permutation[x]<permutation[y];
} else {
return x<y;
}
}
bool cmp2(int x, int y) {
if(abs(x-y)<k_global) {
return permutation[x]<permutation[y];
} else {
return x>y;
}
}
void init(int k, std::vector<int> r) {
k_global = k;
s.build(r);
n = r.size();
permutation.resize(n);
while(ctr<n) {
int p = s.find_zero(1,0,n-1);
assert(p!=-1);
pull(p,k);
}
inv_ht.push_back(n);
map<int,int> m; // store the lt mappings
//key: the global rank, value: the index
for(int i=0; i<k; i++) {
m[permutation[i]] = i;
}
m[(int)1e6] = n;
for(int i=0; i<n; i++) {
auto it = m.upper_bound(permutation[i]);
rg[i] = it->second;
it = m.upper_bound(permutation[(i+k-1)%n]);
lt[(i+k-1)%n] = it->second;
m.erase(permutation[i]);
m[permutation[(i+k)%n]] = (i+k)%n;
}
for(int i=0; i<n; i++) {
if(rg[inv_ht[i]]>inv_ht[i]) {
rg_adj[rg[inv_ht[i]]].push_back(inv_ht[i]);
} else {
rg_adj[n].push_back(inv_ht[i]);
}
if(lt[inv_ht[i]]<inv_ht[i]) {
lt_adj[lt[inv_ht[i]]].push_back(inv_ht[i]);
} else {
lt_adj[n].push_back(inv_ht[i]);
}
}
sort(lt_adj[n].begin(), lt_adj[n].end(), cmp);
sort(rg_adj[n].begin(), rg_adj[n].end(), cmp2);
ctr = 0;
lt_dfs(n);
assert(ctr==n+1);
ctr = 0;
rg_dfs(n);
for(int i=0; i<k; i++) {
rg[i] = i;
}
rg[n] = n;
for(int i=n-1; i>=k; i--) {
rg[i] = rg[rg[i]];
}
for(int i=n-k; i<n; i++) {
lt[i] = i;
}
lt[n] = n;
for(int i=0; i<n-k; i++) {
lt[i] = lt[lt[i]];
}
}
bool lt_path(int x, int y) {
if(y>x) {
return lt_postorder[y]<=lt_postorder[x];
} else {
return lt_postorder[lt[y]]<=lt_postorder[x];
}
}
bool rg_path(int x, int y) {
if(x>y) {
return rg_postorder[x]>rg_postorder[y];
} else {
return rg_postorder[x]>=rg_postorder[rg[y]];
}
}
bool path(int x, int y) {
return lt_path(x,y) || rg_path(x,y);
}
int compare_plants(int x, int y) {
if(path(x,y)) return -1;
if(path(y,x)) return 1;
return 0;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Connecting Supertrees
|
supertrees
|
limli-line-st1.cpp
|
#include <vector>
#include "supertrees.h"
int construct(std::vector<std::vector<int>> p) {
int n = p.size();
std::vector<std::vector<int>> answer;
for (int i = 0; i < n; i++) {
std::vector<int> row;
row.resize(n);
answer.push_back(row);
}
for (int i = 0; i < n - 1; i++) {
answer[i][i + 1] = answer[i + 1][i] = 1;
}
build(answer);
return 1;
}
|
RE
| 0 | 0 | 0 |
[
0,
0,
0
] |
[
"RE",
"SKIPPED",
"SKIPPED"
] |
[
"Wrong Answer\nToo few ways to get from 0 to 2, should be 2 found 1\n",
null,
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Connecting Supertrees
|
supertrees
|
limli-always-possible-st4.cpp
|
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
int construct(vector<vector<int>> p) {
int n = p.size();
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (p[i][j] == 3) return 0;
}
}
vector<vector<int>> answer;
for (int i = 0; i < n; i++) {
vector<int> row;
row.resize(n);
answer.push_back(row);
}
vector<bool> visited(n);
vector<int> componentIndex(n);
vector<int> lineIndex(n);
for (int aa = 0; aa < n; aa++) {
if (visited[aa]) continue;
queue<int> qcomponent;
qcomponent.push(aa);
vector<int> cycle;
while (!qcomponent.empty()) {
int x = qcomponent.front();
qcomponent.pop();
if (visited[x]) continue;
vector<int> curline;
queue<int> qline;
qline.push(x);
cycle.push_back(x);
while (!qline.empty()) {
int y = qline.front();
qline.pop();
if (visited[y]) continue;
curline.push_back(y);
visited[y] = true;
componentIndex[y] = aa;
lineIndex[y] = x;
for (int i = 0; i < n; i++) {
if (p[y][i] == 2)
qcomponent.push(i);
else if (p[y][i] == 1)
qline.push(i);
}
}
// for (int i : curline) printf("%d ", i); printf("\n");
if (curline.size() > 1) {
for (int i = 0; i < curline.size() - 1; i++) {
int a = curline[i];
int b = curline[i + 1];
answer[a][b] = answer[b][a] = 1;
}
}
}
if (cycle.size() == 2) return 0;
if (cycle.size() == 1) continue;
for (int i = 0; i < cycle.size(); i++) {
int a = cycle[i];
int b = cycle[(i + 1) % cycle.size()];
answer[a][b] = answer[b][a] = 1;
}
}
build(answer);
return 1;
}
|
AC
| 1 | 0 | 0 |
[
1,
1,
1
] |
[
"AC",
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Connecting Supertrees
|
supertrees
|
limli-many-circle-st3.cpp
|
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
int construct(vector<vector<int>> p) {
int n = p.size();
vector<vector<int>> answer;
for (int i = 0; i < n; i++) {
vector<int> row;
row.resize(n);
answer.push_back(row);
}
vector<bool> visited(n);
vector<int> component(n, -1);
for (int i = 0; i < n; i++) {
if (visited[i]) continue;
component[i] = i;
int cur = i;
for (int j = 0; j < n; j++) {
if (i == j) continue;
if (p[i][j]) {
if (visited[j]) return 0;
visited[j] = true;
answer[cur][j] = answer[j][cur] = 1;
component[j] = i;
cur = j;
}
}
if (answer[i][cur]) return 0; // 2 cycle
answer[i][cur] = answer[cur][i] = 1;
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (i == j) continue;
if ((component[i] == component[j]) != (p[i][j] == 2)) return 0;
}
}
build(answer);
return 1;
}
|
RE
| 0 | 0 | 0 |
[
0,
0,
0
] |
[
"RE",
"SKIPPED",
"SKIPPED"
] |
[
"Wrong Answer\nAnswer gives possible 0 while actual possible 1\n",
null,
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Connecting Supertrees
|
supertrees
|
limli-many-forest-st1-2.cpp
|
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
int construct(vector<vector<int>> p) {
int n = p.size();
vector<vector<int>> answer;
for (int i = 0; i < n; i++) {
vector<int> row;
row.resize(n);
answer.push_back(row);
}
vector<bool> visited(n);
vector<int> component(n, -1);
for (int i = 0; i < n; i++) {
if (visited[i]) continue;
component[i] = i;
for (int j = 0; j < n; j++) {
if (i == j) continue;
if (p[i][j]) {
if (visited[j]) return 0;
visited[j] = true;
answer[i][j] = answer[j][i] = 1;
component[j] = i;
}
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (i == j) continue;
if ((component[i] == component[j]) != (p[i][j])) return 0;
}
}
build(answer);
return 1;
}
|
RE
| 0 | 0 | 0 |
[
0,
0,
0
] |
[
"RE",
"SKIPPED",
"SKIPPED"
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[
"Wrong Answer\nAnswer gives possible 0 while actual possible 1\n",
null,
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Connecting Supertrees
|
supertrees
|
bad-behavior.cpp
|
#include "supertrees.h"
#include <vector>
int construct(std::vector<std::vector<int>> p) {
const int n = p.size();
if (n == 4) {
return 2;
}
if (n == 2 && p[0][1] == 0) {
return 1;
}
if (n == 2 && p[0][1] == 3) {
build(p);
return 0;
}
if (n == 5) {
build(p);
build(p);
return 0;
}
if (n == 10) {
p.push_back({});
build(p);
return 0;
}
if (n == 200) {
p[0].push_back({});
build(p);
return 0;
}
return -1;
}
|
RE
| 0 | 0 | 0 |
[
0,
0,
0
] |
[
"RE",
"SKIPPED",
"SKIPPED"
] |
[
"Wrong Answer\nWA in grader: Invalid return value of construct\n",
null,
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Connecting Supertrees
|
supertrees
|
return-zeros.cpp
|
#include "supertrees.h"
#include <vector>
int construct(std::vector<std::vector<int>> p) {
int n = p.size();
std::vector<std::vector<int>> answer;
for (int i = 0; i < n; i++) {
std::vector<int> row;
row.resize(n, 0);
answer.push_back(row);
}
build(answer);
return 1;
}
|
RE
| 0 | 0 | 0 |
[
0,
0,
0
] |
[
"RE",
"SKIPPED",
"SKIPPED"
] |
[
"Wrong Answer\nToo few ways to get from 0 to 1, should be 1 found 0\n",
null,
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Connecting Supertrees
|
supertrees
|
limli-full.cpp
|
#include <bits/stdc++.h>
#include "supertrees.h"
using namespace std;
int construct(vector<vector<int>> p) {
int n = p.size();
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (p[i][j] == 3) return 0;
}
}
vector<vector<int>> answer;
for (int i = 0; i < n; i++) {
vector<int> row;
row.resize(n);
answer.push_back(row);
}
vector<bool> visited(n);
vector<int> componentIndex(n);
vector<int> lineIndex(n);
for (int aa = 0; aa < n; aa++) {
if (visited[aa]) continue;
queue<int> qcomponent;
qcomponent.push(aa);
vector<int> cycle;
while (!qcomponent.empty()) {
int x = qcomponent.front();
qcomponent.pop();
if (visited[x]) continue;
vector<int> curline;
queue<int> qline;
qline.push(x);
cycle.push_back(x);
while (!qline.empty()) {
int y = qline.front();
qline.pop();
if (visited[y]) continue;
curline.push_back(y);
visited[y] = true;
componentIndex[y] = aa;
lineIndex[y] = x;
for (int i = 0; i < n; i++) {
if (p[y][i] == 2)
qcomponent.push(i);
else if (p[y][i] == 1)
qline.push(i);
}
}
// for (int i : curline) printf("%d ", i); printf("\n");
if (curline.size() > 1) {
for (int i = 0; i < (int)curline.size() - 1; i++) {
int a = curline[i];
int b = curline[i + 1];
answer[a][b] = answer[b][a] = 1;
}
}
}
if (cycle.size() == 2) return 0;
if (cycle.size() == 1) continue;
for (int i = 0; i < (int)cycle.size(); i++) {
int a = cycle[i];
int b = cycle[(i + 1) % cycle.size()];
answer[a][b] = answer[b][a] = 1;
}
}
for (int i = 0; i < n; i++) {
for (int j = i + 1; j < n; j++) {
if (lineIndex[i] == lineIndex[j]) {
if (p[i][j] != 1) return 0;
} else if (componentIndex[i] == componentIndex[j]) {
if (p[i][j] != 2) return 0;
} else {
if (p[i][j] != 0) return 0;
}
}
}
build(answer);
return 1;
}
|
AC
| 1 | 0 | 0 |
[
1,
1,
1
] |
[
"AC",
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
wy-subtask1.cpp
|
#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> values;
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
for (int i = 0; i < c; i++) values.push_back(d[i][0]);
sort(values.begin(), values.end());
long long ans = 0;
for (int i = 0; i < c; i++) ans += abs(values[values.size() / 2] - values[i]);
std::vector<std::vector<int>> answer;
for (int i = 0; i < c; i++) {
std::vector<int> row(s);
for (int j = 0; j < s; j++) {
row[j] = 0;
}
answer.push_back(row);
}
allocate_tickets(answer);
return ans;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"Wrong Answer\nThere is multiple tickets of color 0 on day 0\n",
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
bad-behaviour.cpp
|
#include "tickets.h"
#include <vector>
long long find_maximum(int k, std::vector<std::vector<int>> x) {
int n = x.size();
int m = x[0].size();
std::vector<std::vector<int>> answer;
for (int i = 0; i < n-1; i++) {
std::vector<int> row(m);
for (int j = 0; j < m; j++) {
if (j < k) {
row[j] = j;
} else {
row[j] = -1;
}
}
answer.push_back(row);
}
allocate_tickets(answer);
return 1;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"Wrong Answer\nWA in grader: allocate_tickets called with parameter of wrong size\n",
null
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
no-call.cpp
|
#include "tickets.h"
#include <vector>
long long find_maximum(int k, std::vector<std::vector<int>> x) {
return 1;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
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[
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| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
limli-greedy-ends.cpp
|
#include <bits/stdc++.h>
#include "tickets.h"
using namespace std;
typedef pair<int, int> ii;
typedef long long ll;
int n, s, k;
int magic[1510];
int cmp(int a, int b) {
return magic[a] < magic[b];
}
long long find_maximum(int k1, vector<vector<int>> d) {
k = k1;
n = d.size();
s = d[0].size();
vector<vector<int>> answer;
for (int i = 0; i < n; i++) {
vector<int> row(s);
for (int j = 0; j < s; j++) {
row[j] = -1;
}
answer.push_back(row);
}
vector<deque<ii>> ticketsleft(n);
for (int i = 0; i < n; i++) {
for (int j = 0; j < s; j++) {
ticketsleft[i].push_back(ii(d[i][j], j));
}
sort(ticketsleft[i].begin(), ticketsleft[i].end());
magic[i] = ticketsleft[i][0].first + ticketsleft[i][s-1].first;
}
ll pipelength = 0;
for (int day = 0; day < k; day++) {
// printf("day %d\n", day);
vector<int> order(n);
for (int i = 0; i < n; i++) {
order[i] = i;
}
sort(order.begin(), order.end(), cmp);
vector<int> stuff(n);
for (int i = 0; i < n; i++) {
int ind = order[i];
ii ship = ii(-1,-1);
if (i < n / 2) {
ship = ticketsleft[ind].front();
ticketsleft[ind].pop_front();
if (!ticketsleft[ind].empty())
magic[ind] += ticketsleft[ind].front().first;
} else {
ship = ticketsleft[ind].back();
ticketsleft[ind].pop_back();
if (!ticketsleft[ind].empty())
magic[ind] += ticketsleft[ind].back().first;
}
// printf("company %d: %d %d\n", ind, ship.first, ship.second);
stuff[ind] = ship.first;
answer[ind][ship.second] = day;
magic[ind] -= ship.first;
}
sort(stuff.begin(), stuff.end());
int med = stuff[n / 2];
for (int i = 0; i < n; i++) {
pipelength += abs(stuff[i] - med);
}
}
allocate_tickets(answer);
return pipelength;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
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[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
sy-one-day-sort.cpp
|
#include "tickets.h"
#include <vector>
#include <cassert>
#include <algorithm>
using namespace std;
typedef pair<int, int> pii;
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
assert(k == 1);
long long int cost = 0;
vector<int> small, large;
vector<pii> gain;
std::vector<std::vector<int>> ans;
ans.resize(c);
for (int i = 0; i < c; i++) {
ans[i].resize(s, -1);
small.push_back(0);
large.push_back(0);
for (int j = 0; j < s; j++) {
if (d[i][j] < d[i][small[i]]) small[i] = j;
if (d[i][j] > d[i][large[i]]) large[i] = j;
}
gain.push_back(pii(d[i][small[i]] + d[i][large[i]], i));
cost -= d[i][small[i]];
}
sort(gain.begin(), gain.end());
for (int i = 0; i < c / 2; i++) {
ans[gain[i].second][small[gain[i].second]] = 0;
}
for (int i = c / 2; i < c; i++) {
ans[gain[i].second][large[gain[i].second]] = 0;
cost += gain[i].first;
}
allocate_tickets(ans);
return cost;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"tickets: graders/tickets.cpp:14: long long int find_maximum(int, std::vector<std::vector<int> >): Assertion `k == 1' failed.\ntimeout: the monitored command dumped core\n/piston/packages/cms_ioi/1.0.0/run: line 90: 1838914 Aborted timeout --preserve-status \"$soft_limit\" \"$@\"\nRuntime error with exit code 134\n",
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
limli-greedy-sum.cpp
|
#include <bits/stdc++.h>
#include "tickets.h"
using namespace std;
typedef pair<int, int> ii;
typedef long long ll;
int n, s, k;
int sum[1510];
int cmp(int a, int b) {
return sum[a] < sum[b];
}
long long find_maximum(int k1, vector<vector<int>> d) {
k = k1;
n = d.size();
s = d[0].size();
for (int i = 0; i < n; i++) {
for (int j = 0; j < s; j++) {
sum[i] += d[i][j];
}
}
vector<vector<int>> answer;
for (int i = 0; i < n; i++) {
vector<int> row(s);
for (int j = 0; j < s; j++) {
row[j] = -1;
}
answer.push_back(row);
}
vector<deque<ii>> ticketsleft(n);
for (int i = 0; i < n; i++) {
for (int j = 0; j < s; j++) {
ticketsleft[i].push_back(ii(d[i][j], j));
}
sort(ticketsleft[i].begin(), ticketsleft[i].end());
}
ll pipelength = 0;
for (int day = 0; day < k; day++) {
// printf("day %d\n", day);
vector<int> order(n);
for (int i = 0; i < n; i++) {
order[i] = i;
}
sort(order.begin(), order.end(), cmp);
vector<int> stuff(n);
for (int i = 0; i < n; i++) {
int ind = order[i];
ii ship = ii(-1,-1);
if (i < n / 2) {
ship = ticketsleft[ind].front();
ticketsleft[ind].pop_front();
} else {
ship = ticketsleft[ind].back();
ticketsleft[ind].pop_back();
}
// printf("company %d: %d %d\n", ind, ship.first, ship.second);
stuff[ind] = ship.first;
answer[ind][ship.second] = day;
sum[ind] -= ship.first;
}
sort(stuff.begin(), stuff.end());
int med = stuff[n / 2];
for (int i = 0; i < n; i++) {
pipelength += abs(stuff[i] - med);
}
}
allocate_tickets(answer);
return pipelength;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
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[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
wy-subtask3.cpp
|
#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> values;
vector<int> ones[1505], zeros[1505];
int sums[1505];
vector< pair<int, int> > zeroPlace, onePlace;
bool used[1505];
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
for (int i = 0; i < c; i++) {
int cnt_zero = 0;
for (int j = 0; j < s; j++) {
if (d[i][j] == 0) {
zeros[i].push_back(j);
cnt_zero++;
} else ones[i].push_back(j);
}
sums[i] = s - cnt_zero;
}
std::vector<std::vector<int>> answer;
for (int i = 0; i < c; i++) {
std::vector<int> row(s);
for (int j = 0; j < s; j++) {
row[j] = -1;
}
answer.push_back(row);
}
long long ans = 0;
for (int i = 0; i < k; i++) {
vector< pair<int, int> > ones1;
for (int j = 0; j < c; j++) ones1.push_back(make_pair(sums[j], j));
sort(ones1.begin(), ones1.end());
int can_produce_one = 0, can_produce_zero = 0;
for (int j = 0; j < c; j++) {
if (sums[j] != 0) can_produce_one++;
if (sums[j] != s - i) can_produce_zero++;
}
assert(can_produce_zero + can_produce_one >= c);
int zero = c/2, one = c/2;
if (can_produce_zero < c/2) {
zero = can_produce_zero;
one = c - can_produce_zero;
}
if (can_produce_one < c/2) {
zero = c - can_produce_one;
one = can_produce_one;
}
values.clear();
for (int j = 0; j < zero; j++) {
values.push_back(0);
int company = ones1[j].second;
answer[company][zeros[company].back()] = i;
zeros[company].pop_back();
}
for (int j = 0; j < one; j++) {
values.push_back(1);
int company = ones1[c - j - 1].second;
answer[company][ones[company].back()] = i;
ones[company].pop_back();
sums[company]--;
}
sort(values.begin(), values.end());
for (int j = 0; j < values.size(); j++) ans += abs(values[j] - values[values.size() / 2]);
}
allocate_tickets(answer);
return ans;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"Wrong Answer\nContestant returned 7 but the tickets gives a total value of 1\n",
null
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
wy-subtask6.cpp
|
#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
int sum[1505], f[1505], b[1505];
vector< vector<int> > ret;
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
vector< pair<long long, pair<int, int> > > V;
long long ans = 0;
vector<vector<pair<int, int>>> d2;
d2.resize(c);
for (int i = 0; i < c; i++) {
for (int j = 0; j < s; j++) {
d2[i].push_back(make_pair(d[i][j], j));
}
sort(d2[i].begin(), d2[i].end());
}
for (int i = 0; i < c; i++) {
for (int j = 0; j < k; j++) ans -= d2[i][j].first;
}
for (int i = 0; i < c*k/2; i++) {
long long best = -1000000000000000000ll;
int idx_best = 0;
for (int j = 0; j < c; j++) {
if (sum[j] == k) continue;
long long changeCost = d2[j][s-1-sum[j]].first + d2[j][k-1-sum[j]].first;
if (changeCost > best) {
best = changeCost;
idx_best = j;
}
}
sum[idx_best]++;
ans += best;
}
ret.resize(c);
for (int i = 0; i < c; i++) {
vector<int> v;
v.resize(s, -1);
ret[i] = v;
}
for (int i = 0; i < k; i++) {
vector< pair<int, int> > v;
for (int j = 0; j < c; j++) v.push_back(make_pair(sum[j], j));
sort(v.begin(), v.end());
for (int j = 0; j < c/2; j++) {
ret[v[j].second][d2[v[j].second][f[v[j].second]].second] = i;
f[v[j].second]++;
}
for (int j = c/2; j < c; j++) {
ret[v[j].second][d2[v[j].second][s-b[v[j].second]-1].second] = i;
b[v[j].second]++;
sum[v[j].second]--;
}
}
allocate_tickets(ret);
return ans;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
many-call.cpp
|
#include "tickets.h"
#include <vector>
long long find_maximum(int k, std::vector<std::vector<int>> x) {
allocate_tickets(x);
allocate_tickets(x);
return 1;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"Wrong Answer\nWA in grader: allocate_tickets called more than once\n",
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
wy-subtask5.cpp
|
#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
int sum[1505], f[1505], b[1505];
long long dp[85][3505];
int best[85][3505];
vector< vector<int> > ret;
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
vector< pair<long long, pair<int, int> > > V;
long long ans = 0;
vector<vector<pair<int, int>>> d2;
d2.resize(c);
for (int i = 0; i < c; i++) {
for (int j = 0; j < s; j++) {
d2[i].push_back(make_pair(d[i][j], j));
}
sort(d2[i].begin(), d2[i].end());
}
memset(dp, -63, sizeof(dp));
dp[0][0] = 0;
for (int i = 1; i <= c; i++) {
for (int j = 0; j <= c*k/2; j++) {
long long minus = 0, plus = 0;
for (int l = 0; l < k; l++) minus += d2[i-1][l].first;
for (int l = 0; l <= min(j, k); l++) {
long long nans = dp[i-1][j-l] + plus - minus;
if (nans > dp[i][j]) {
dp[i][j] = nans;
best[i][j] = j-l;
}
if (l != min(j, k)) {
minus -= d2[i-1][k-l-1].first;
plus += d2[i-1][s-l-1].first;
}
}
}
}
int cur = c*k/2;
for (int i = c-1; i >= 0; i--) {
sum[i] = cur - best[i+1][cur];
cur = best[i+1][cur];
}
ret.resize(c);
for (int i = 0; i < c; i++) {
vector<int> v;
v.resize(s, -1);
ret[i] = v;
}
for (int i = 0; i < k; i++) {
vector< pair<int, int> > v;
for (int j = 0; j < c; j++) v.push_back(make_pair(sum[j], j));
sort(v.begin(), v.end());
for (int j = 0; j < c/2; j++) {
ret[v[j].second][d2[v[j].second][f[v[j].second]].second] = i;
f[v[j].second]++;
}
for (int j = c/2; j < c; j++) {
ret[v[j].second][d2[v[j].second][s-b[v[j].second]-1].second] = i;
b[v[j].second]++;
sum[v[j].second]--;
}
}
allocate_tickets(ret);
return dp[c][c*k/2];
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
wy-subtask2.cpp
|
#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
vector<pair<int,int> > values[1505], diffs;
vector<int> fvalues;
int picked[1505];
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
for (int i = 0; i < c; i++) {
for (int j = 0; j < s; j++) values[i].push_back(make_pair(d[i][j], j));
sort(values[i].begin(), values[i].end());
diffs.push_back(make_pair(values[i].back().first + values[i][0].first, i));
}
sort(diffs.begin(), diffs.end());
for (int i = 0; i < c; i++) {
if (i < c/2) picked[diffs[i].second] = values[diffs[i].second][0].second;
else picked[diffs[i].second] = values[diffs[i].second].back().second;
}
for (int i = 0; i < c; i++) fvalues.push_back(d[i][picked[i]]);
sort(fvalues.begin(), fvalues.end());
long long ans = 0;
for (int i = 0; i < fvalues.size(); i++) ans += abs(fvalues[i] - fvalues[fvalues.size() / 2]);
std::vector<std::vector<int>> answer;
for (int i = 0; i < c; i++) {
std::vector<int> row(s);
for (int j = 0; j < s; j++) {
if (j != picked[i]) row[j] = -1;
else row[j] = 0;
}
answer.push_back(row);
}
allocate_tickets(answer);
return ans;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"Wrong Answer\nThere is no ticket of color 0 on day 1\n",
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
wrong-dim.cpp
|
#include "tickets.h"
#include <vector>
long long find_maximum(int k, std::vector<std::vector<int>> x) {
allocate_tickets({{0}});
return 1;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"Wrong Answer\nWA in grader: allocate_tickets called with parameter of wrong size\n",
null
] |
00-samples
| true | 0 |
SKIPPED
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2020
|
day1
|
Carnival Tickets
|
tickets
|
yanhao-scam.cpp
|
#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
int c, s, k;
vector<vector<int>> d;
vector<int> tanks; // the location of the tanks
vector<vector<int>> ret;
int ord[1505];
set<tuple<int,int,int>> lt[1505]; // (position, company, ship)
set<tuple<int,int,int>> rg[1505]; // (position, company, ship)
void optimize_tickets(int h) {
// optimize separately for each company
for(int i=0; i<k; i++) {
ord[i] = i;
}
sort(ord, ord+k, [](int x, int y)->bool {return tanks[x]>tanks[y];}); // now ord[i] gives the index of the i-th smallest position
for(int j=0; j<s; j++) {
ret[h][j] = -1; // first reset everything
}
// for each j=0 to k-1, pick either the j-th ship or the (s-k+j)-th ship
assert(tanks[ord[0]] >= tanks[ord[1]]);
// we pick them in reverse order
for(int j=0; j<k; j++) {
if(abs(tanks[ord[j]] - d[h][j]) < abs(tanks[ord[j]] - d[h][s-k+j])) {
ret[h][s-k+j] = ord[j];
if(get<0>(*rg[ord[j]].begin())>d[h][s-k+j]) {
lt[ord[j]].insert(make_tuple(d[h][s-k+j], h, s-k+j));
} else {
rg[ord[j]].insert(make_tuple(d[h][s-k+j], h, s-k+j));
}
} else {
ret[h][j] = ord[j];
if(get<0>(*rg[ord[j]].begin())>d[h][j]) {
lt[ord[j]].insert(make_tuple(d[h][j], h, j));
} else {
rg[ord[j]].insert(make_tuple(d[h][j], h, j));
}
}
}
}
long long ans;
void optimize_tanks(int h) { // get all the medians, excluding company h
for(int i=0; i<s; i++) {
if(ret[h][i]!=-1) {
lt[ret[h][i]].erase(make_tuple(d[h][i], h, i));
rg[ret[h][i]].erase(make_tuple(d[h][i], h, i));
}
}
// rebalance such that there are c/2-1 items on left, c/2 items on right
for(int i=0; i<k; i++) {
//assert(lt[i].size() + rg[i].size() == c-1);
while((int) lt[i].size()>c/2-1) {
rg[i].insert(*(--lt[i].end()));
lt[i].erase(--lt[i].end());
}
while((int)rg[i].size()>c/2) {
lt[i].insert(*rg[i].begin());
rg[i].erase(rg[i].begin());
}
}
for(int i=0; i<k; i++) {
tanks[i] = get<0>(*rg[i].begin());
}
/*vector<int> v[k];
for(int i=0; i<c; i++) {
if(i==h) continue;
for(int j=0; j<s; j++) {
if(ret[i][j]!=-1) {
v[ret[i][j]].push_back(d[i][j]);
}
}
}
for(int i=0; i<k; i++) {
tanks[i] = get<0>(*rg[i].begin());
nth_element(v[i].begin(), v[i].begin() + c/2 - 1, v[i].end());
assert(tanks[i] == v[i][c/2-1]);
}*/
}
void init() {
ans = 0;
vector<int> v[k];
for(int i=0; i<c; i++) {
for(int j=0; j<s; j++) {
if(ret[i][j]!=-1) {
v[ret[i][j]].push_back(d[i][j]);
}
}
}
for(int i=0; i<k; i++) {
while((int)rg[i].size()>c/2) {
lt[i].insert(*rg[i].begin());
rg[i].erase(rg[i].begin());
}
nth_element(v[i].begin(), v[i].begin() + c/2 - 1, v[i].end());
for(int j: v[i]) {
ans += abs(v[i][c/2-1] - j);
}
assert(v[i][c/2-1]== get<0>(*(--lt[i].end())));
}
}
void calc_ans() { // get all the medians, excluding company h
ans = 0;
vector<int> v[k];
for(int i=0; i<c; i++) {
for(int j=0; j<s; j++) {
if(ret[i][j]!=-1) {
v[ret[i][j]].push_back(d[i][j]);
}
}
}
for(int i=0; i<k; i++) {
nth_element(v[i].begin(), v[i].begin() + c/2 - 1, v[i].end());
for(int j: v[i]) {
ans += abs(v[i][c/2-1] - j);
}
}
}
long long find_maximum(int _k, std::vector<std::vector<int>> _d) {
d = _d;
k = _k;
c = d.size();
s = d[0].size();
tanks.resize(k); // the location of the tanks for each day
for (int i = 0; i < c; i++) {
std::vector<int> row(s);
for (int j = 0; j < s; j++) {
if (j < k) {
row[j] = j;
} else {
row[j] = -1;
}
}
ret.push_back(row);
}
calc_ans();
long long prev_ans = 0;
int ctr = 0;
do {
ctr++;
prev_ans = ans;
for(int h=0; h<c; h++) {
optimize_tanks(h);
optimize_tickets(h);
}
calc_ans();
} while (ans!=prev_ans);
assert(ctr<=5);
allocate_tickets(ret);
calc_ans();
return ans;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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2020
|
day1
|
Carnival Tickets
|
tickets
|
sy-calc-median.cpp
|
#include "tickets.h"
#include <vector>
#include <cassert>
#include <algorithm>
using namespace std;
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
assert(s==1);
vector<int> all_d;
std::vector<std::vector<int>> ans;
ans.resize(c);
for (int i = 0; i < c; i++) {
ans[i].push_back(0);
all_d.push_back(d[i][0]);
}
sort(all_d.begin(), all_d.end());
long long int sum = 0;
for (int i = 0; i < c; i++) {
sum += abs(all_d[i] - all_d[c/2]);
}
allocate_tickets(ans);
return sum;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"tickets: graders/tickets.cpp:12: long long int find_maximum(int, std::vector<std::vector<int> >): Assertion `s==1' failed.\ntimeout: the monitored command dumped core\n/piston/packages/cms_ioi/1.0.0/run: line 90: 760796 Aborted timeout --preserve-status \"$soft_limit\" \"$@\"\nRuntime error with exit code 134\n",
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
huajun-scam.cpp
|
#include "tickets.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
vector<set<pair<ll,ll> > > se;
int cur[1505];
long long find_maximum(int k, vector<vector<int>> d) {
ll c = d.size();
ll s = d[0].size();
ll sum =0 ,a,b,x,maxn,minx,y,z;
vector<vector<int>> answer;
for (int i = 0; i < c; i++) {
vector<int> row;
for(int j=0;j<s;j++)row.push_back(-1);
answer.push_back(row);
}
ll i,j;
for(i=0;i<c;i++){
set<pair<ll,ll> > temp;
for(j=0;j<s;j++){
temp.insert(make_pair(d[i][j],j));
}
se.push_back(temp);
}
for(i=0;i<k;i++){
vector<tuple<ll,int,int> > v;
y = se[0].size();
for(j=0;j<c;j++){
auto it = *se[j].begin();
auto it2 = *(--se[j].end());
cur[j] = it2.second;
sum+=it2.first;
v.push_back(make_tuple(it.first+it2.first,j,it.second));
}
sort(v.begin(),v.end());
for(j=0;j<c/2;j++){
tie(a,b,x) = v[j];
sum-=a;
se[b].erase(se[b].begin());
cur[b] = x;
}
for(j=0;j<c;j++)answer[j][cur[j]] = i;
for(j=0;j<c;j++){
if(se[j].size()==y){
se[j].erase(--se[j].end());
}
}
}
allocate_tickets(answer);
return sum;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
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[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
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00-samples
| true | 0 |
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2020
|
day1
|
Carnival Tickets
|
tickets
|
sy-full.cpp
|
#include "tickets.h"
#include <vector>
#include <algorithm>
#include <queue>
using namespace std;
typedef long long int lli;
typedef pair<lli, lli> pii;
long long find_maximum(int k, vector<vector<int>> d) {
// Number of companies
int c = d.size();
// tickets per company
int s = d[0].size();
// Sort each company's tickets by their distance
// o[company][place] => index of ship which is <place>th from left
vector<vector<int>> o;
o.resize(c);
for (int i = 0; i < c; i++) {
o[i].resize(s);
for (int j = 0; j < s; j++) {
o[i][j] = j;
}
sort(o[i].begin(), o[i].end(), [&](const int &a, const int &b) {
return d[i][a] < d[i][b];
});
}
// d_o(company, place) => distance of ship which is <place>th form left
auto d_o = [&](const int &a, const int &b) {
return d[a][o[a][b]];
};
// gain: (change to cost by turning a - into a +, company index)
priority_queue<pii> gain;
// Total cost of the arrangement
lli cost = 0;
// plus_count[company] => How many +s the company will send
vector<int> plus_count;
plus_count.resize(c, 0);
for (int i = 0; i < c; i++) {
for (int j = 0; j < k; j++) {
// First incur cost of all -s
cost -= d_o(i, j);
}
// Queue a possible - to +
gain.push(
pii(
d_o(i, s - 1 - plus_count[i])
+ d_o(i, k - 1 - plus_count[i]),
i
)
);
}
// Take ck/2 +s
for (int i = 0; i < c * k / 2; i++) {
pii top = gain.top(); gain.pop();
cost += top.first;
// If the company hasnt reached k +s, queue another possible +
int this_company = top.second;
plus_count[this_company]++;
if (plus_count[this_company] < k) {
gain.push(
pii(
d_o(this_company, s - 1 - plus_count[this_company])
+ d_o(this_company, k - 1 - plus_count[this_company]),
this_company
)
);
}
}
// Empty out the priority queue, will use again later
while (!gain.empty()) gain.pop();
// gain: (+s remaining, company index)
for (int i = 0; i < c; i++) {
gain.push(pii(plus_count[i], i));
}
// minus_count[company] => How many -s the company has sent so far
vector<int> minus_count;
minus_count.resize(c, 0);
// Prepare answer vector dimensions and fill with -1s
vector<vector<int>> answer;
answer.resize(c);
for (int i = 0; i < c; i++) {
answer[i].resize(s, -1);
}
// take[company] => Does this company send a + in this days
vector<int> take;
take.resize(c, 0);
// Simulate k days of tickets
for (int i = 0; i < k; i++) {
// Pick c/2 companies with the most +s left
for (int j = 0; j < c / 2; j ++) {
take[gain.top().second] = 1;
gain.pop();
}
// Check if each company sent a - or +, and change answer accordingly
for (int j = 0; j < c; j++) {
if (take[j]) {
// Company j sent a + this round, send the smallest +
// Queue the company back
answer[j][o[j][s - plus_count[j]]] = i;
plus_count[j]--;
gain.push(pii(plus_count[j], j));
} else {
// Company j sent a - this round, send the smallest -
answer[j][o[j][minus_count[j]]] = i;
minus_count[j]++;
}
take[j] = 0;
}
}
// Return to grader
allocate_tickets(answer);
return cost;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
yanhao-push_relabel.cpp
|
#include "tickets.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
struct Edge {
int from, to, cap, flow, index;
Edge(int from, int to, int cap, int flow, int index) :
from(from), to(to), cap(cap), flow(flow), index(index) {}
};
struct PushRelabel {
int N;
vector<vector<Edge> > G;
vector<LL> excess;
vector<int> dist, active, count;
queue<int> Q;
PushRelabel(int N) : N(N), G(N), excess(N), dist(N), active(N), count(2*N) {}
void AddEdge(int from, int to, int cap) {
G[from].push_back(Edge(from, to, cap, 0, G[to].size()));
if (from == to) G[from].back().index++;
G[to].push_back(Edge(to, from, 0, 0, G[from].size() - 1));
}
void Enqueue(int v) {
if (!active[v] && excess[v] > 0) { active[v] = true; Q.push(v); }
}
void Push(Edge &e) {
int amt = int(min(excess[e.from], LL(e.cap - e.flow)));
if (dist[e.from] <= dist[e.to] || amt == 0) return;
e.flow += amt;
G[e.to][e.index].flow -= amt;
excess[e.to] += amt;
excess[e.from] -= amt;
Enqueue(e.to);
}
void Gap(int k) {
for (int v = 0; v < N; v++) {
if (dist[v] < k) continue;
count[dist[v]]--;
dist[v] = max(dist[v], N+1);
count[dist[v]]++;
Enqueue(v);
}
}
void Relabel(int v) {
count[dist[v]]--;
dist[v] = 2*N;
for (int i = 0; i < G[v].size(); i++)
if (G[v][i].cap - G[v][i].flow > 0)
dist[v] = min(dist[v], dist[G[v][i].to] + 1);
count[dist[v]]++;
Enqueue(v);
}
void Discharge(int v) {
for (int i = 0; excess[v] > 0 && i < G[v].size(); i++) Push(G[v][i]);
if (excess[v] > 0) {
if (count[dist[v]] == 1)
Gap(dist[v]);
else
Relabel(v);
}
}
LL GetMaxFlow(int s, int t) {
count[0] = N-1;
count[N] = 1;
dist[s] = N;
active[s] = active[t] = true;
for (int i = 0; i < G[s].size(); i++) {
excess[s] += G[s][i].cap;
Push(G[s][i]);
}
while (!Q.empty()) {
int v = Q.front();
Q.pop();
active[v] = false;
Discharge(v);
}
LL totflow = 0;
for (int i = 0; i < G[s].size(); i++) totflow += G[s][i].flow;
return totflow;
}
};
pair<int,int> p[1505][1505]; // (position, company, index)
int sums[(int)3e6];
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
vector<vector<int>> ret(c);
for(int i=0; i<c; i++) {
for(int j=0; j<s; j++) {
ret[i].push_back(-1);
}
}
long long ans = 0;
PushRelabel din(k+c+2);
int source = k+c;
int sink = k+c+1;
for(int i=0; i<k; i++) {
din.AddEdge(source, i, c/2);
for(int j=k; j<k+c; j++) {
din.AddEdge(i, j, 1);
}
}
vector<int> pl[c];
vector<int> mi[c];
for(int i=0; i<c; i++) {
for(int j=0; j<s; j++) {
p[i][j] = make_pair(d[i][j], j);
}
sort(p[i], p[i]+s);
for(int j=0; j<k; j++) {
sums[i*k+j] = p[i][j].first + p[i][s-k+j].first;
}
}
sort(sums, sums+c*k);
int median = sums[(c*k)/2];
int extras = 0;
for(int i=c*k/2-1; i>=0; i--) {
if(sums[i]==median) extras++;
}
for(int i=0; i<c; i++) {
for(int j=0; j<k; j++) {
if(p[i][j].first+p[i][s-k+j].first<median) {
mi[i].push_back(p[i][j].second);
} else if(p[i][j].first+p[i][s-k+j].first==median && extras>0) {
mi[i].push_back(p[i][j].second);
extras--;
} else if(p[i][j].first+p[i][s-k+j].first>=median) {
pl[i].push_back(p[i][s-k+j].second);
}
}
din.AddEdge(i+k, sink, pl[i].size());
}
din.GetMaxFlow(source, sink);
/*for(Edge x: din.E) {
if(x.from < k && x.to < k+c && x.v>=k) {
int day = x.u;
int company = x.v - k;
if(x.flow == 1) {
ret[company][pl[company].back()] = day;
ans += d[company][pl[company].back()];
pl[company].pop_back();
} else {
ret[company][mi[company].back()] = day;
ans -= d[company][mi[company].back()];
mi[company].pop_back();
}
}
}*/
for(int i=0; i<din.N; i++) {
for(Edge x: din.G[i]) {
if(x.from < k && x.to < k+c && x.to>=k) {
int day = x.from;
int company = x.to - k;
if(x.flow == 1) {
ret[company][pl[company].back()] = day;
ans += d[company][pl[company].back()];
pl[company].pop_back();
} else {
ret[company][mi[company].back()] = day;
ans -= d[company][mi[company].back()];
mi[company].pop_back();
}
}
}
}
allocate_tickets(ret);
return ans;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
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[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
wy-subtask4.cpp
|
#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
int sum[1505], f[1505], b[1505];
vector< vector<int> > ret;
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
vector< pair<long long, pair<int, int> > > V;
long long ans = 0;
vector<vector<pair<int, int>>> d2;
d2.resize(c);
for (int i = 0; i < c; i++) {
for (int j = 0; j < s; j++) {
d2[i].push_back(make_pair(d[i][j], j));
}
sort(d2[i].begin(), d2[i].end());
}
for (int i = 0; i < c; i++) for (int j = 0; j < s; j++) V.push_back(make_pair(d[i][j], make_pair(i, j)));
sort(V.begin(), V.end());
for (int i = 0; i < c*s/2; i++) {
ans -= V[i].first;
}
for (int i = c*s/2; i < c*s; i++) {
ans += V[i].first;
sum[V[i].second.first]++;
}
ret.resize(c);
for (int i = 0; i < c; i++) {
vector<int> v;
v.resize(s, -1);
ret[i] = v;
}
for (int i = 0; i < k; i++) {
vector< pair<int, int> > v;
for (int j = 0; j < c; j++) v.push_back(make_pair(sum[j], j));
sort(v.begin(), v.end());
for (int j = 0; j < c/2; j++) {
ret[v[j].second][d2[v[j].second][f[v[j].second]].second] = i;
f[v[j].second]++;
}
for (int j = c/2; j < c; j++) {
ret[v[j].second][d2[v[j].second][s-b[v[j].second]-1].second] = i;
b[v[j].second]++;
sum[v[j].second]--;
}
}
allocate_tickets(ret);
return ans;
}
|
RE
| 0 | 0 | 0 |
[
0,
0
] |
[
"RE",
"SKIPPED"
] |
[
"Wrong Answer\nContestant returned 7 but the tickets gives a total value of 8\n",
null
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
yanhao-maxflow.cpp
|
#include "tickets.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
struct Edge {
int u, v;
int cap, flow;
Edge() {}
Edge(int u, int v, LL cap): u(u), v(v), cap(cap), flow(0) {}
};
struct Dinic {
int N;
vector<Edge> E;
vector<vector<int>> g;
vector<int> d, pt;
Dinic(int N): N(N), E(0), g(N), d(N), pt(N) {}
void AddEdge(int u, int v, LL cap) {
if (u != v) {
E.emplace_back(Edge(u, v, cap));
g[u].emplace_back(E.size() - 1);
E.emplace_back(Edge(v, u, 0));
g[v].emplace_back(E.size() - 1);
}
}
bool BFS(int S, int T) {
queue<int> q({S});
fill(d.begin(), d.end(), N + 1);
d[S] = 0;
while(!q.empty()) {
int u = q.front(); q.pop();
if (u == T) break;
for (int k: g[u]) {
Edge &e = E[k];
if (e.flow < e.cap && d[e.v] > d[e.u] + 1) {
d[e.v] = d[e.u] + 1;
q.emplace(e.v);
}
}
}
return d[T] != N + 1;
}
LL DFS(int u, int T, LL flow = -1) {
if (u == T || flow == 0) return flow;
for (int &i = pt[u]; i < g[u].size(); ++i) {
Edge &e = E[g[u][i]];
Edge &oe = E[g[u][i]^1];
if (d[e.v] == d[e.u] + 1) {
LL amt = e.cap - e.flow;
if (flow != -1 && amt > flow) amt = flow;
if (LL pushed = DFS(e.v, T, amt)) {
e.flow += pushed;
oe.flow -= pushed;
return pushed;
}
}
}
return 0;
}
LL MaxFlow(int S, int T) {
LL total = 0;
while (BFS(S, T)) {
fill(pt.begin(), pt.end(), 0);
while (LL flow = DFS(S, T))
total += flow;
}
return total;
}
};
pair<int,int> p[1505][1505]; // (position, company, index)
int sums[(int)3e6];
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
vector<vector<int>> ret(c);
for(int i=0; i<c; i++) {
for(int j=0; j<s; j++) {
ret[i].push_back(-1);
}
}
long long ans = 0;
Dinic din(k+c+2);
int source = k+c;
int sink = k+c+1;
for(int i=0; i<k; i++) {
din.AddEdge(source, i, c/2);
for(int j=k; j<k+c; j++) {
din.AddEdge(i, j, 1);
}
}
vector<int> pl[c];
vector<int> mi[c];
for(int i=0; i<c; i++) {
for(int j=0; j<s; j++) {
p[i][j] = make_pair(d[i][j], j);
}
sort(p[i], p[i]+s);
for(int j=0; j<k; j++) {
sums[i*k+j] = p[i][j].first + p[i][s-k+j].first;
}
}
sort(sums, sums+c*k);
int median = sums[(c*k)/2];
int extras = 0;
for(int i=c*k/2-1; i>=0; i--) {
if(sums[i]==median) extras++;
}
for(int i=0; i<c; i++) {
for(int j=0; j<k; j++) {
if(p[i][j].first+p[i][s-k+j].first<median) {
mi[i].push_back(p[i][j].second);
} else if(p[i][j].first+p[i][s-k+j].first==median && extras>0) {
mi[i].push_back(p[i][j].second);
extras--;
} else if(p[i][j].first+p[i][s-k+j].first>=median) {
pl[i].push_back(p[i][s-k+j].second);
}
}
din.AddEdge(i+k, sink, pl[i].size());
}
din.MaxFlow(source, sink);
for(Edge x: din.E) {
if(x.u < k && x.v < k+c && x.v>=k) {
int day = x.u;
int company = x.v - k;
if(x.flow == 1) {
ret[company][pl[company].back()] = day;
ans += d[company][pl[company].back()];
pl[company].pop_back();
} else {
ret[company][mi[company].back()] = day;
ans -= d[company][mi[company].back()];
mi[company].pop_back();
}
}
}
allocate_tickets(ret);
return ans;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day1
|
Carnival Tickets
|
tickets
|
wy-full.cpp
|
#include "tickets.h"
#include <bits/stdc++.h>
using namespace std;
int sum[1505], f[1505], b[1505];
vector< vector<int> > ret;
bool cmp(pair<long long, pair<int, int> > a, pair<long long, pair<int, int> > b) {
if (a.first != b.first) return a.first > b.first;
else return a.second < b.second;
}
long long find_maximum(int k, std::vector<std::vector<int>> d) {
int c = d.size();
int s = d[0].size();
vector< pair<long long, pair<int, int> > > V;
long long ans = 0;
vector<vector<pair<int, int>>> d2;
d2.resize(c);
for (int i = 0; i < c; i++) {
for (int j = 0; j < s; j++) {
d2[i].push_back(make_pair(d[i][j], j));
}
}
for (int i = 0; i < c; i++) {
sort(d2[i].begin(), d2[i].end());
for (int j = 0; j < k; j++) V.push_back(make_pair((long long)d2[i][s-j-1].first + d2[i][k-j-1].first, make_pair(i, j)));
for (int j = 0; j < k; j++) ans -= d2[i][j].first;
}
sort(V.begin(), V.end(), cmp);
for (int i = 0; i < c * k / 2; i++) {
ans += V[i].first;
sum[V[i].second.first] = V[i].second.second + 1;
}
ret.resize(c);
for (int i = 0; i < c; i++) {
vector<int> v;
v.resize(s, -1);
ret[i] = v;
}
for (int i = 0; i < k; i++) {
vector< pair<int, int> > v;
for (int j = 0; j < c; j++) v.push_back(make_pair(sum[j], j));
sort(v.begin(), v.end());
for (int j = 0; j < c/2; j++) {
ret[v[j].second][d2[v[j].second][f[v[j].second]].second] = i;
f[v[j].second]++;
}
for (int j = c/2; j < c; j++) {
ret[v[j].second][d2[v[j].second][s-b[v[j].second]-1].second] = i;
b[v[j].second]++;
sum[v[j].second]--;
}
}
allocate_tickets(ret);
return ans;
}
|
AC
| 1 | 0 | 0 |
[
1,
1
] |
[
"AC",
"AC"
] |
[
"Correct\n\n",
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-oneX.cpp
|
#include "biscuits.h"
#include <vector>
using namespace std;
void merge_biscuits(vector<long long> &a) {
while(a.size()<61) a.push_back(0);
for(int i=0; i<(int)a.size(); i++) {
if(a[i]>2) {
a[i+1] += (a[i]-1)/2;
a[i] = (a[i]%2 ? 1 : 2);
}
}
}
long long count_tastiness(long long x, std::vector<long long> a) {
merge_biscuits(a);
long long ans = 1;
long long current = 0;
for(int i=60; i>=0; i--) {
if(a[i]==0) {
ans *= (current+1);
current = 0;
} else {
current = current*2 + a[i];
}
}
ans *= (current+1);
return ans;
}
|
RE
| 0 | 0 | 0 |
[
0
] |
[
"RE"
] |
[
"Wrong Answer\n1st lines differ - on the 1st token, expected: '5', found: '14'\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-smallX_top_down.cpp
|
#include "biscuits.h"
#include <vector>
#include <unordered_map>
using namespace std;
const int x_max = 3e5+1;
long long dp[61][2*x_max];
long long f(int idx, long long w, long long x, vector<long long> &a) {
if(idx==60) return 1;
if(dp[idx][w]!=-1) return dp[idx][w];
return dp[idx][w] = f(idx+1, (w+a[idx])/2, x, a) + (w+a[idx]>=x ? f(idx+1, (w+a[idx]-x)/2, x, a) : 0);
}
void merge_biscuits(long long x, vector<long long> &a) {
while(a.size()<61) a.push_back(0);
for(int i=0; i<(int)a.size(); i++) {
if(a[i]>x+1) {
a[i+1] += (a[i]-x)/2;
a[i] -= ((a[i]-x)/2)*2;
}
}
}
long long count_tastiness(long long x, std::vector<long long> a) {
for(int i=0; i<=60; i++) {
for(int j=0; j<=2*x; j++) {
dp[i][j] = -1;
}
}
merge_biscuits(x, a);
return f(0, 0, x, a);
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-ac_bottom_up.cpp
|
#include "biscuits.h"
#include <vector>
long long dp[61];
long long b[61];
long long count_tastiness(long long x, std::vector<long long> a) {
long long sum = 0;
for(int i=0; i<=60-std::__lg(x); i++) {
dp[i] = 0;
long long j = (1LL<<i);
for(int h=i-1; h>=0; h--) {
if((j>>h)>0) {
dp[i] += dp[h];
j = std::min(j, b[h])-(1LL<<h);
}
}
dp[i] += (j==1);
sum += (i<(int)a.size() ? (a[i]<<i) : 0);
b[i] = sum/x+1;
}
return dp[60-std::__lg(x)];
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-scam2.cpp
|
#include "biscuits.h"
#include <vector>
#include <assert.h>
#include <bitset>
#include <string.h>
using namespace std;
const int x_max = (1<<24)+1;
long long dp[2][2*x_max];
short ans[1<<29];
void merge_biscuits(long long x, vector<long long> &a) {
while(a.size()<61) a.push_back(0);
for(int i=0; i<(int)a.size(); i++) {
if(a[i]>x+1) {
a[i+1] += (a[i]-x)/2;
a[i] -= ((a[i]-x)/2)*2;
}
}
}
const int transition = 22;
pair<int, long long> s[(int)8e6];
long long count_tastiness(long long x, std::vector<long long> a) {
if(x<x_max) {
for(int j=0; j<=2*x; j++) {
dp[0][j] = 1;
dp[1][j] = 1;
}
if(a[0]<x) {
a[1] += a[0]/2;
a[0] = 0;
}
merge_biscuits(x, a);
// use bottom up- bottom up is faster!
long long threshold[60];
threshold[0] = a[0]/2;
for(int i=1; i<60; i++) {
threshold[i] = (threshold[i-1]+a[i-1])/2;
}
for(int i=59-__lg(x); i>=transition; i--) {
bool b = i%2;
for(int j=0; j<x-a[i]; j++) {
dp[b][j] = dp[!b][(j+a[i])/2];
}
for(int j=x-a[i]; j<=threshold[i]; j++) {
dp[b][j] = dp[!b][(j+a[i])/2] + dp[!b][(j+a[i]-x)/2];
}
}
int offset = 1;
s[0] = make_pair(0,0);
long long ret = 0;
while(offset) {
while(s[offset-1].first < transition && s[offset-1].second + a[s[offset-1].first] < x) {
s[offset-1].second = (s[offset-1].second + a[s[offset-1].first])/2;
s[offset-1].first++;
}
if(s[offset-1].first == transition) {
ret += dp[transition%2][s[offset-1].second];
offset--;
} else {
s[offset].second = (s[offset-1].second + a[s[offset-1].first] - x)/2;
s[offset-1].second = (s[offset-1].second + a[s[offset-1].first])/2;
s[offset-1].first++;
s[offset].first = s[offset-1].first;
offset++;
}
}
return ret;
} else {
while(a.size()<=60) {
a.push_back(0);
}
merge_biscuits(x, a);
vector<long long> sum;
sum.push_back(a[0]);
for(int i=1; i<(int) a.size(); i++) {
sum.push_back(sum.back() + (a[i]<<i));
}
unsigned long long tmp = 1;
for(int i=0; i<6; i++) {
int threshold = min(2LL<<i, sum[i]/x+1);
tmp |= (tmp<<(1LL<<i));
if(threshold>=64) continue;
tmp &= ((1LL<<threshold)-1);
assert(tmp);
}
ans[0] = 64;
for(int i=6; i<35; i++) {
long long threshold = min(1LL<<i, sum[i]/x-(1LL<<i)+1);
if(threshold<0) continue;
int k = 1<<(i-6);
memcpy(ans+k, ans, threshold/64*sizeof(short));
ans[threshold/64+k] = min((int)ans[threshold/64], (int)(threshold&63));
}
long long ret = 0;
short pop[65];
pop[0] = 0;
for(int i=0; i<64; i++) {
if((1LL<<i)&tmp) {
pop[i+1] = pop[i]+1;
} else {
pop[i+1] = pop[i];
}
}
for(int i=0; i<(1<<29); i++) {
ret += pop[ans[i]];
}
return ret;
}
}
|
AC
| 1 | 0 | 0 |
[
1
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[
"AC"
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[
"Correct\n\n"
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00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-smallAns_scam1.cpp
|
#include "biscuits.h"
#include <vector>
#include <assert.h>
using namespace std;
bool is_valid(long long y, long long x, vector<long long> &a) {
long long carry = 0;
for(int i=0; y>0; i++) {
assert(i<a.size());
if(y & 1) {
if(carry + a[i] < x) return false;
carry = (carry + a[i] - x)/2;
} else {
carry = (carry + a[i])/2;
}
y = y/2;
}
return true;
}
long long count_tastiness(long long x, std::vector<long long> a) {
long long s = 0;
for(int i=0; i<a.size(); i++) {
s += (a[i]<<i);
}
while(a.size()<60) a.push_back(0);
long long ans = 0;
long long i=0;
while(i<=s/x) {
if(is_valid(i, x, a)) {
i++;
ans++;
} else {
i += i & (-i);
}
}
return ans;
}
|
AC
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1
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-smallX_bottom_up.cpp
|
#include "biscuits.h"
#include <vector>
using namespace std;
const int x_max = 1e7+1;
long long dp[2][2*x_max];
void merge_biscuits(long long x, vector<long long> &a) {
while(a.size()<61) a.push_back(0);
for(int i=0; i<(int)a.size(); i++) {
if(a[i]>x+1) {
a[i+1] += (a[i]-x)/2;
a[i] -= (a[i]-x)&(-2);
}
}
}
const int transition = 16;
pair<int, long long> s[2<<transition];
long long count_tastiness(long long x, std::vector<long long> a) {
merge_biscuits(x, a);
for(int j=0; j<=2*x; j++) {
dp[0][j] = 1;
dp[1][j] = 1;
}
if(a[0]<x) {
a[1] += a[0]/2;
a[0] = 0;
}
merge_biscuits(x, a);
long long threshold[60];
threshold[0] = a[0]/2;
for(int i=1; i<60; i++) {
threshold[i] = (threshold[i-1]+a[i-1])/2;
}
for(int i=59-__lg(x); i>=transition; i--) {
bool b = i%2;
for(int j=0; j<x-a[i]; j++) {
dp[b][j] = dp[!b][(j+a[i])/2];
}
for(int j=max(0,(int)x-(int)a[i]); j<=threshold[i]; j++) {
dp[b][j] = dp[!b][(j+a[i])/2] + dp[!b][(j+a[i]-x)/2];
}
}
int offset = 1;
s[0] = make_pair(0,0);
long long ret = 0;
while(offset) {
while(s[offset-1].first < transition && s[offset-1].second + a[s[offset-1].first] < x) {
s[offset-1].second = (s[offset-1].second + a[s[offset-1].first])/2;
s[offset-1].first++;
}
if(s[offset-1].first == transition) {
ret += dp[transition%2][s[offset-1].second];
offset--;
} else {
s[offset].second = (s[offset-1].second + a[s[offset-1].first] - x)/2;
s[offset-1].second = (s[offset-1].second + a[s[offset-1].first])/2;
s[offset-1].first++;
s[offset].first = s[offset-1].first;
offset++;
}
}
return ret;
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-scam3.cpp
|
#include "biscuits.h"
#include <vector>
long long count_tastiness(long long x, std::vector<long long> a) {
long long sum = 0;
for(int i=0; i<(int) a.size(); i++) {
sum += (a[i]<<i);
}
return sum/x+1;
}
|
RE
| 0 | 0 | 0 |
[
0
] |
[
"RE"
] |
[
"Wrong Answer\n2nd lines differ - on the 1st token, expected: '6', found: '7'\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-smallTotalSum.cpp
|
#include "biscuits.h"
#include <vector>
#include <cstdio>
using namespace std;
bool is_valid(long long y, long long x, vector<long long> &a) {
long long carry = 0;
for(int i=0; y>0; i++) {
if(y & 1) {
if(carry + a[i] < x) return false;
carry = (carry + a[i] - x)/2;
} else {
carry = (carry + a[i])/2;
}
y = y/2;
}
return true;
}
long long count_tastiness(long long x, std::vector<long long> a) {
long long s = 0;
for(int i=0; i<(int)a.size(); i++) {
s += (a[i]<<i);
}
while(a.size()<60) a.push_back(0);
long long ans = 0;
for(int i=0; i<=s; i++) {
if(is_valid(i, x, a)) ans++;
}
return ans;
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-smallAns_scam2.cpp
|
#include "biscuits.h"
#include <vector>
using namespace std;
pair<int, long long> s[(int)1e6];
const int x_max = 5e5;
int dp[2][2*x_max];
void merge_biscuits(long long x, vector<long long> &a) {
while(a.size()<61) a.push_back(0);
for(int i=0; i<(int)a.size(); i++) {
if(a[i]>x+1) {
a[i+1] += (a[i]-x)/2;
a[i] -= (a[i]-x)&(-2);
}
}
}
const int transition = 16;
long long count_tastiness2(long long x, std::vector<long long> &a) {
for(int j=0; j<=2*x; j++) {
dp[0][j] = 1;
dp[1][j] = 1;
}
if(a[0]<x) {
a[1] += a[0]/2;
a[0] = 0;
}
merge_biscuits(x, a);
long long threshold[60];
threshold[0] = a[0]/2;
for(int i=1; i<60; i++) {
threshold[i] = (threshold[i-1]+a[i-1])/2;
}
for(int i=59-__lg(x); i>=transition; i--) {
bool b = i%2;
for(int j=0; j<x-a[i]; j++) {
dp[b][j] = dp[!b][(j+a[i])/2];
}
for(int j=max(0,(int)x-(int)a[i]); j<=threshold[i]; j++) {
dp[b][j] = dp[!b][(j+a[i])/2] + dp[!b][(j+a[i]-x)/2];
}
}
int ans = 0;
s[1] = make_pair(0,0);
pair<int, long long> *p = s+1;
while(p>s) {
while(p->first < transition && p->second + a[p->first] < x) {
p->second = (p->second + a[p->first])/2;
p->first++;
}
if(p->first == transition) {
ans += dp[transition%2][p->second];
p--;
} else {
(p+1)->second = (p->second + a[p->first] - x)/2;
p->second = (p->second + a[p->first])/2;
p->first++;
(p+1)->first = p->first;
p++;
}
}
return ans;
}
long long count_tastiness(long long x, std::vector<long long> a) {
merge_biscuits(x, a);
if(x<x_max) return count_tastiness2(x, a);
const int sz = 59-__lg(x);
//while(a.size()<=60) a.push_back(0);
int ans = 0;
s[1] = make_pair(0,0);
pair<int, long long> *p = s+1;
while(p>s) {
while(p->first < sz && p->second + a[p->first] < x) {
p->second = (p->second + a[p->first])/2;
p->first++;
}
if(p->first == sz) {
ans+=1+((p->second + a[p->first])>=x);
p--;
} else {
(p+1)->second = (p->second + a[p->first] - x)/2;
p->second = (p->second + a[p->first])/2;
p->first++;
(p+1)->first = p->first;
p++;
}
}
return ans;
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
return-one.cpp
|
#include "biscuits.h"
#include <vector>
long long count_tastiness(long long x, std::vector<long long> a) {
return 1;
}
|
RE
| 0 | 0 | 0 |
[
0
] |
[
"RE"
] |
[
"Wrong Answer\n1st lines differ - on the 1st token, expected: '5', found: '1'\n"
] |
00-samples
| true | 0 |
SKIPPED
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2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-likai-ac.cpp
|
#include "biscuits.h"
#include <vector>
using namespace std;
long long count_tastiness(long long X, std::vector<long long> A) {
int K = 63;
while (A.size() < 63) A.push_back(0);
vector<long long> MEM(K); //number of solutions in range [0..2^i-1]
vector<long long> PTH(K); //previous thresholds
long long CURSUM = 0;
for (int i = 0; i < K; i++) {
if (i) CURSUM += A[i - 1] * (1LL << (i - 1));
MEM[i] = 0;
long long CTH = CURSUM / X; //maximum possible solution
PTH[i] = CTH;
if (i == 0) {
MEM[i] = 1;
continue;
}
for (int j = i - 1; j >= 0; j--) {
if (j == 0) { //special case: 0 or 1
if (CTH >= 1) MEM[i] += 2;
else MEM[i] += 1;
}
else if (CTH >= (1LL << (j + 1))) { //threshold is bigger than entire range
MEM[i] += 2LL * MEM[j];
break;
}
else if (CTH >= (1LL << j)) { //threshold is bigger than half the range
MEM[i] += MEM[j];
CTH = min(CTH - (1LL << j), PTH[j]);
}
else CTH = min(CTH, PTH[j]);
}
}
return MEM[K - 1];
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
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2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-smallAns.cpp
|
#include "biscuits.h"
#include <vector>
#include <cstdio>
#include <assert.h>
using namespace std;
long long arr[(int) 4e7];
long long count_tastiness(long long x, std::vector<long long> a) {
while(a.size()<=60) {
a.push_back(0);
}
vector<long long> s;
s.push_back(a[0]);
for(int i=1; i<(int) a.size(); i++) {
s.push_back(s.back() + (a[i]<<i));
}
arr[0] = 0;
int sz = 1;
for(int i=0; i<(int) s.size(); i++) {
long long threshold = min(1LL<<i, s[i]/x-(1LL<<i)+1);
for(int j=0; arr[j]<threshold; j++) {
arr[sz++] = arr[j]+(1LL<<i);
}
}
/*vector<long long> ans;
ans.reserve((int) 4e7);
ans.push_back(0);
for(int i=0; i<(int) s.size(); i++) {
if((x<<i)>(1LL<<60)) break;
long long threshold = min(1LL<<i, s[i]/x-(1LL<<i)+1);
for(int j=0; ans[j]<threshold; j++) {
ans.push_back(ans[j]+(1LL<<i));
}
}*/
//return ans.size();
return sz;
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-ac.cpp
|
#include "biscuits.h"
#include <vector>
#include <map>
using namespace std;
map<long long, long long> m;
long long f(vector<long long> &s, long long x, long long n) {
if(n<=0) return 0;
if(n==1) return 1;
if(m.find(n)!=m.end()) {
return m[n];
}
long long a = __lg(n-1);
return m[n] = f(s,x,1LL<<a) + f(s,x,min(n,1+s[a]/x)-(1LL<<a));
}
long long count_tastiness(long long x, std::vector<long long> a) {
m.clear();
for(int i=1; i<(int)a.size(); i++) {
a[i] = a[i-1] + (a[i]<<i);
}
while(a.size()<=60) a.push_back(a.back());
return f(a, x, 1+a.back());
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Packing Biscuits
|
biscuits
|
biscuits-yanhao-restrict.cpp
|
#include "biscuits.h"
#include <vector>
using namespace std;
long long dp[61];
void merge_biscuits(long long x, vector<long long> &a) {
while(a.size()<61) a.push_back(0);
for(int i=0; i<(int)a.size(); i++) {
if(a[i]>x+1) {
a[i+1] += (a[i]-x)/2;
a[i] -= ((a[i]-x)/2)*2;
}
}
}
long long count_tastiness(long long x, std::vector<long long> a) {
merge_biscuits(x, a);
dp[0] = a[0]<x ? 1 : 2;
for(int i=1; i<=60; i++) {
if(a[i] >= x) {
dp[i] = 2*dp[i-1];
} else {
dp[i] = dp[i-1];
long long target = 2*(x-a[i]); // we are short of (target) coins of type idx-1
for(int idx=i-1; idx>=0 && target<=2*x && target>0; idx--) {
if(a[idx] < target) { // not enough to meet target, subtract from target
target -= a[idx];
target *= 2; // double because we now use lower value coins
} else if(idx==0) {
dp[i] += (a[idx]-target<x ? 1: 2);
} else {
target = 2*(x-a[idx]+target);
dp[i] += dp[idx-1];
}
}
}
}
return dp[60];
}
|
AC
| 1 | 0 | 0 |
[
1
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[
"AC"
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[
"Correct\n\n"
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00-samples
| true | 0 |
SKIPPED
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2020
|
day2
|
Stations
|
stations
|
william-line.cpp
|
#include "stations.h"
#define MAXN 1000
std::vector<int> adj[MAXN], labels;
void dfs(int v, int p, int d) {
labels[v] = d;
for (int i : adj[v]) if (i != p) dfs(i, v, d + 1);
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
for (int i = 0; i < n; i++) {
adj[i].clear();
}
for (int i = 0; i < n - 1; i++) {
adj[u[i]].push_back(v[i]);
adj[v[i]].push_back(u[i]);
}
labels.resize(n);
for (int i = 0; i < n; i++) {
if(adj[i].size() == 1) {
dfs(i, -1, 0);
return labels;
}
}
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
return s < t ? s + 1 : s - 1;
}
|
RE
| 0 | 0 | 0 |
[
0
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[
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[
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] |
2020
|
day2
|
Stations
|
stations
|
william-ac.cpp
|
#include "stations.h"
#include <algorithm>
#define MAXN 1000
int cnt;
std::vector<int> adj[MAXN], labels;
void dfs(int v, int p, int d) {
if(!d) labels[v] = cnt++;
for (int i : adj[v]) if (i != p) dfs(i, v, d ^ 1);
if(d) labels[v] = cnt++;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
cnt = 0;
for (int i = 0; i < n; i++) {
adj[i].clear();
}
for (int i = 0; i < n - 1; i++) {
adj[u[i]].push_back(v[i]);
adj[v[i]].push_back(u[i]);
}
labels.resize(n);
dfs(0, -1, 0);
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
if (s < c[0]) {
if (t < s || t >= c.back()) return c.back();
return *std::lower_bound(c.begin(), c.end(), t);
}
if (t > s || t <= c[0]) return c[0];
return *--std::upper_bound(c.begin(), c.end(), t);
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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],
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}
] |
2020
|
day2
|
Stations
|
stations
|
bad-behavior-die-fast2.cpp
|
#include "stations.h"
#include <vector>
#include <cstdlib>
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
std::vector<int> labels(n);
for (int i = 0; i < n; i++) {
labels[i] = i;
}
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
exit(0);
return c[0];
}
|
RE
| 0 | 0 | 0 |
[
0
] |
[
"RE"
] |
[
"Wrong Answer\nCould not read query response from second grader (solution possibly terminated). query #0, index=0, scenario=0\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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],
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}
] |
2020
|
day2
|
Stations
|
stations
|
william-n2.cpp
|
#include "stations.h"
#define MAXN 1000
int cnt;
std::vector<int> adj[MAXN], labels;
void dfs(int v, int p) {
labels[v] = (++cnt) * MAXN;
for (int i : adj[v]) if (i != p) dfs(i, v);
labels[v] += cnt;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
cnt = -1;
for (int i = 0; i < n; i++) {
adj[i].clear();
}
for (int i = 0; i < n - 1; i++) {
adj[u[i]].push_back(v[i]);
adj[v[i]].push_back(u[i]);
}
labels.resize(n);
dfs(0, -1);
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
int s_in = s / MAXN, s_out = s % MAXN, t_in = t / MAXN;
if (t_in < s_in || t_in > s_out) return c[0];
for (int i = 0; i < (int)c.size(); i++){
if (c[i] / MAXN < s_in) continue; // do not process parent
if (t_in <= c[i] % MAXN) return c[i];
}
return -1;
}
|
RE
| 0 | 0 | 0 |
[
0
] |
[
"RE"
] |
[
"Wrong Answer\nInvalid labels (values out of range). scenario=0, k=10, vertex=1, label=1004\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Stations
|
stations
|
bad-behavior-wrong-label-values.cpp
|
#include "stations.h"
#include <vector>
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
std::vector<int> labels(n);
for (int i=0; i<n; i++)
labels[i] = ((n%100 == 0) ? -1 : (k+1));
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
return c[0];
}
|
RE
| 0 | 0 | 0 |
[
0
] |
[
"RE"
] |
[
"Wrong Answer\nInvalid labels (values out of range). scenario=0, k=10, vertex=0, label=11\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Stations
|
stations
|
bad-behavior-die-fast1.cpp
|
#include "stations.h"
#include <vector>
#include <cstdlib>
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
exit(0);
return {};
}
int find_next_station(int s, int t, std::vector<int> c) {
return c[0];
}
|
RE
| 0 | 0 | 0 |
[
0
] |
[
"RE"
] |
[
"Wrong Answer\nCould not read m from first grader (solution possibly terminated). scenario=0\n"
] |
00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day2
|
Stations
|
stations
|
william-2n.cpp
|
#include "stations.h"
#include <algorithm>
#define MAXN 1000
int cnt;
std::vector<int> adj[MAXN], labels;
void dfs(int v, int p, int d) {
if(!d) labels[v] = cnt;
++cnt;
for (int i : adj[v]) if (i != p) dfs(i, v, d ^ 1);
if(d) labels[v] = cnt;
++cnt;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
cnt = 0;
for (int i = 0; i < n; i++) {
adj[i].clear();
}
for (int i = 0; i < n - 1; i++) {
adj[u[i]].push_back(v[i]);
adj[v[i]].push_back(u[i]);
}
labels.resize(n);
dfs(0, -1, 0);
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
if (s < c[0]) {
if (t < s || t >= c.back()) return c.back();
return *std::lower_bound(c.begin(), c.end(), t);
}
if (t > s || t <= c[0]) return c[0];
return *--std::upper_bound(c.begin(), c.end(), t);
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n"
] |
00-samples
| true | 0 |
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] |
2020
|
day2
|
Stations
|
stations
|
raymond-ac.cpp
|
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> sz, labels;
vector<vector<int>> E;
int dfsSiz(int x, int p = -1) {
sz[x] = 1;
for (int y : E[x]) {
if (y == p) continue;
sz[x] += dfsSiz(y, x);
}
return sz[x];
}
void dfs(int x, int s, int e, int p = -1, int h = 0) {
if (h & 1) {
labels[x] = e--;
} else {
labels[x] = s++;
}
for (int y : E[x]) {
if (y == p) continue;
dfs(y, s, s + sz[y] - 1, x, h + 1);
s += sz[y];
}
assert(s == e + 1);
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
assert(u.size() == n - 1 && v.size() == n - 1);
sz = vector<int>(n);
labels = vector<int>(n);
E = vector<vector<int>>(n);
for (int i = 0; i < n - 1; ++i) {
E[u[i]].push_back(v[i]);
E[v[i]].push_back(u[i]);
}
dfsSiz(0);
dfs(0, 0, n - 1);
return labels;
}
int find_next_station(int s, int t, vector<int> c) {
vector<int> sub{s, s};
int m = c.size();
if (c[0] < s) {
if (m > 1) sub[0] = c[1];
if (t < sub[0] || t > sub[1]) return c[0];
for (int i = 1; i + 1 < m; ++i)
if (c[i + 1] > t) return c[i];
return c[m - 1];
} else {
if (s != 0 && m > 1) sub[1] = c[m - 2];
else if (s == 0) sub[1] = c[m - 1];
if (t < sub[0] || t > sub[1]) return c[m - 1];
for (int i = 0;; ++i)
if (c[i] >= t) return c[i];
}
}
|
AC
| 1 | 0 | 0 |
[
1
] |
[
"AC"
] |
[
"Correct\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Stations
|
stations
|
william-star.cpp
|
#include "stations.h"
#define MAXN 1000
std::vector<int> adj[MAXN], labels;
void dfs(int v, int p, int d) {
labels[v] = d;
for (int i : adj[v]) if (i != p) dfs(i, v, d + 1);
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
for (int i = 0; i < n; i++) {
adj[i].clear();
}
for (int i = 0; i < n - 1; i++) {
adj[u[i]].push_back(v[i]);
adj[v[i]].push_back(u[i]);
}
labels.resize(n);
int centre = 0;
for (int i = 0; i < n; i++) {
if(adj[i].size() > 2) {
centre = i;
break;
}
}
labels[centre] = 0;
for (int i = 0; i < (int)adj[centre].size(); i++) {
dfs(adj[centre][i], centre, i * MAXN + 1); // encode with branch * MAXN + index
}
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
if (s == 0) { // special case for centre
return t / MAXN * MAXN + 1;
} else if (s / MAXN == t / MAXN) { // same branch
return s < t ? s + 1 : s - 1;
} else return c[0]; // different branch, move towards smaller index or centre
}
|
RE
| 0 | 0 | 0 |
[
0
] |
[
"RE"
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[
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00-samples
| true | 0 |
SKIPPED
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] |
2020
|
day2
|
Stations
|
stations
|
bad-behavior-wrong-labels-len.cpp
|
#include "stations.h"
#include <vector>
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
std::vector<int> labels(n+n%3);
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
return c[0];
}
|
RE
| 0 | 0 | 0 |
[
0
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[
"RE"
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[
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] |
2020
|
day2
|
Stations
|
stations
|
bad-behavior-duplicate-labels.cpp
|
#include "stations.h"
#include <vector>
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
std::vector<int> labels(n);
for (int i=0; i<n; i++)
labels[i] = i;
labels[n-1] = labels[0];
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
return c[0];
}
|
RE
| 0 | 0 | 0 |
[
0
] |
[
"RE"
] |
[
"Wrong Answer\nInvalid labels (duplicates values). scenario=0, label=0\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
2020
|
day2
|
Stations
|
stations
|
william-exponential.cpp
|
#include "stations.h"
#define MAXN 1000
std::vector<int> adj[MAXN], labels;
int cnt;
void dfs(int v, int p, int d) {
labels[v] = d;
for (int i : adj[v]) if (i != p) dfs(i, v, (d << 3) + (++cnt));
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
cnt = 0;
for (int i = 0; i < n; i++) {
adj[i].clear();
}
for (int i = 0; i < n - 1; i++) {
adj[u[i]].push_back(v[i]);
adj[v[i]].push_back(u[i]);
}
labels.resize(n);
dfs(0, -1, 0);
return labels;
}
int find_next_station(int s, int t, std::vector<int> c) {
if (t < s) {
return s >> 3;
}
while (s < t) {
if ((t >> 3) == s) {
return t;
}
t >>= 3;
}
return s >> 3;
}
|
RE
| 0 | 0 | 0 |
[
0
] |
[
"RE"
] |
[
"Wrong Answer\nInvalid labels (values out of range). scenario=0, k=10, vertex=3, label=12\n"
] |
00-samples
| true | 0 |
SKIPPED
| 0 |
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] |
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