#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string.h>
#include <random>
#include <chrono>
#include <vector>
#include <array>
using namespace std;
#define endl '\n'
#define ll long long
#define pi pair<int, int>
#define f first
#define s second
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const int mxn = 10, k = 4, mxt = 2000, w = 3;
const char c[w + k] = {'R', 'G', 'W', '/', '|', '\\', '-'};
typedef pair<array<pi, w>, int> T;
int n, m;
uint8_t a[mxn][mxn], b[mxn][mxn];
int vis[mxn][mxn];
vector<T> v;
int dx[2 * k] = {1, 1, 1, 0, -1, -1, -1, 0};
int dy[2 * k] = {-1, 0, 1, 1, 1, 0, -1, -1};
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cin >> n >> m;
for(int i = 0; i < n; i++)
for(int j = 0; j < m; j++){
char x;
cin >> x;
a[i][j] = find(c, c + w, x) - c;
}
for(int i = 0; i < n; i++)
for(int j = 0; j < m; j++){
if(!~-a[i][j]){
for(int p = 1; p < 2 * k; p += 2){
v.push_back(T());
v.back().f[1] = {i, j}, v.back().s = w + p % k;
for(int l = 0; l < 2; l++){
int x = i + dx[(p + l * k) % (2 * k)], y = j + dy[(p + l * k) % (2 * k)];
if(x >= 0 && y >= 0 && x < n && y < m && a[x][y] == 2 * l){
v.back().f[2 * l] = {x, y};
}else{
v.pop_back();
break;
}
}
}
}
}
int ret = 0;
memset(vis, -1, sizeof(vis));
for(int t = 0, tt = 0; t < mxt; t += tt){
int it = uniform_int_distribution<int>(0, v.size() - 1)(rng);
int x = -1;
for(pi i : v[it].f){
if(~vis[i.f][i.s]){
if(!~x) x = vis[i.f][i.s];
else x = -2;
}
}
if(x != -2 && x != it){
if(~x){
for(pi i : v[x].f) vis[i.f][i.s] = -1;
a[v[x].f[1].f][v[x].f[1].s] = 1;
}
for(pi i : v[it].f) vis[i.f][i.s] = it;
a[v[it].f[1].f][v[it].f[1].s] = v[it].s;
ret += !~x;
if(tt && !~x){
t = 0;
}
}else if(!tt){
tt = 1;
}
}
cout << ret << endl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
140 ms |
262148 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
140 ms |
262148 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
140 ms |
262148 KB |
Execution killed with signal 9 (could be triggered by violating memory limits) |
| 2 |
Halted |
0 ms |
0 KB |
- |
