#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds
bool arr[2005][2005];
int dx[4] = {1,-1,0,0};
int dy[4] = {0,0,1,-1};
int n,m;
bool inbound(int x,int y){
return (x>=0 && y>=0);
}
int xpymax,xpymin,xmymax,xmymin;
int cnt = 0;
void dfs(int x,int y){
arr[x][y]=1;
cnt++;
xpymax = max(xpymax,x+y);
xpymin = min(xpymin,x+y);
xmymax = max(xmymax,x-y);
xmymin = min(xmymin,x-y);
for(int i=0;i<4;i++){
if(inbound(x+dx[i] , y+dy[i])){
if(arr[x+dx[i]][y+dy[i]]==0){
dfs(x+dx[i],y+dy[i]);
}
}
}
}
int main(){
ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
cin>>n>>m;
for(int i=0;i<2005;i++){
arr[i][m+4]=1;
arr[n+4][i]=1;
}
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
char a;cin>>a;
if(a=='#') arr[i][j]=1;
}
}
int ans = 0;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
if(!arr[i][j]) {
xpymax = INT_MIN;
xpymin = INT_MAX;
xmymax = INT_MIN;
xmymin = INT_MAX;
cnt = 0;
dfs(i,j);
//cout<<i<<" "<<j<<"\n";
//cout<<xpymax<<" "<<xpymin<<" "<<xmymax<<' '<<xmymin<<" "<<cnt<<"\n";
if(xpymax-xpymin!=xmymax-xmymin || (xpymax-xpymin)%2) continue;
int l = (xpymax-xpymin)/2+1;
int area = (2*l*l)-(2*l)+1;
//cout<<area<<"\n";
if(cnt==area){
ans++;
}
}
}
}
cout<<ans<<"\n";
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
4820 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4180 KB |
Output is correct |
| 3 |
Correct |
2 ms |
4308 KB |
Output is correct |
| 4 |
Correct |
2 ms |
4564 KB |
Output is correct |
| 5 |
Correct |
2 ms |
4172 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4308 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4312 KB |
Output is correct |
| 8 |
Correct |
2 ms |
4308 KB |
Output is correct |
| 9 |
Correct |
2 ms |
4304 KB |
Output is correct |
| 10 |
Correct |
2 ms |
4308 KB |
Output is correct |
| 11 |
Correct |
2 ms |
4308 KB |
Output is correct |
| 12 |
Correct |
2 ms |
4688 KB |
Output is correct |
| 13 |
Correct |
2 ms |
4180 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
4820 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4180 KB |
Output is correct |
| 3 |
Correct |
2 ms |
4308 KB |
Output is correct |
| 4 |
Correct |
2 ms |
4564 KB |
Output is correct |
| 5 |
Correct |
2 ms |
4172 KB |
Output is correct |
| 6 |
Correct |
3 ms |
4308 KB |
Output is correct |
| 7 |
Correct |
3 ms |
4312 KB |
Output is correct |
| 8 |
Correct |
2 ms |
4308 KB |
Output is correct |
| 9 |
Correct |
2 ms |
4304 KB |
Output is correct |
| 10 |
Correct |
2 ms |
4308 KB |
Output is correct |
| 11 |
Correct |
2 ms |
4308 KB |
Output is correct |
| 12 |
Correct |
2 ms |
4688 KB |
Output is correct |
| 13 |
Correct |
2 ms |
4180 KB |
Output is correct |
| 14 |
Correct |
226 ms |
234860 KB |
Output is correct |
| 15 |
Correct |
48 ms |
4480 KB |
Output is correct |
| 16 |
Correct |
113 ms |
5280 KB |
Output is correct |
| 17 |
Correct |
152 ms |
115492 KB |
Output is correct |
| 18 |
Correct |
79 ms |
5264 KB |
Output is correct |
| 19 |
Correct |
98 ms |
32016 KB |
Output is correct |
| 20 |
Correct |
123 ms |
48268 KB |
Output is correct |
| 21 |
Correct |
101 ms |
38908 KB |
Output is correct |
| 22 |
Correct |
108 ms |
13388 KB |
Output is correct |
| 23 |
Correct |
107 ms |
20892 KB |
Output is correct |
| 24 |
Correct |
106 ms |
18756 KB |
Output is correct |
| 25 |
Correct |
181 ms |
169676 KB |
Output is correct |
| 26 |
Correct |
63 ms |
5192 KB |
Output is correct |
