#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define ppb pop_back
#define ep insert
#define endl '\n'
#define elif else if
#define pow pwr
#define sqrt sqrtt
#define int long long
#define y1 YONE
typedef unsigned long long ull;
using namespace std;
const int N=105;
int n,m,q,a[N][N];
bool b[N][N],vis[N][N];
int rec(int x,int y){
if (x==n && y==m) return a[x][y]=1;
if (x>n || x<1 || y>m || y<1 || b[x][y]) return a[x][y]=INT_MAX;
if (vis[x][y]) return a[x][y];
vis[x][y]=true;
return a[x][y]=bool(rec(x+1,y)<INT_MAX && rec(x+1,y)>0)+bool(rec(x,y+1)<INT_MAX && rec(x,y+1)>0);
}
void dfs(int x,int y){
vis[x][y]=true;
if (x<n && !b[x+1][y]) dfs(x+1,y);
if (y<m && !b[x][y+1]) dfs(x,y+1);
return;
}
int32_t main(){
ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
//for (int i=0;i<N;i++) for (int j=0;j<N;j++) a[i][j]=INT_MAX;
cin>>n>>m;
for (int i=1;i<=n;i++) for (int j=1;j<=m;j++) cin>>b[i][j];
/*rec(1,1);
for (int i=1;i<=n;i++) for (int j=1;j<=m;j++) if (!b[i][j] && a[i][j]>=INT_MAX) a[i][j]=0;
for (int i=1;i<=n;i++){
for (int j=1;j<=m;j++) cout<<a[i][j]<<' ';
cout<<endl;
}*/
cin>>q;
while (q--){
int x,y;cin>>x>>y;
b[x][y]=true;
memset(vis,0,sizeof(vis));
dfs(1,1);
if (!vis[n][m]) b[x][y]=0;
cout<<b[x][y]<<endl;
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
5047 ms |
348 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
5047 ms |
348 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
