#include<bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define all(x) x.begin(),x.end()
#define pb emplace_back
#define N 3010
char a[N][N];
int ans,cnt[2][N];
signed main(){
ios::sync_with_stdio(0);
cin.tie(0);
int n,m,i,j;
cin>>n>>m;
for(i=0;i<n;i++) for(j=0;j<m;j++)
cin>>a[i][j];
for(i=n-1;i>=0;i--) for(j=m-1;j>=0;j--){
if(a[i][j]=='J') ans+=cnt[0][i]*cnt[1][j];
if(a[i][j]=='O') cnt[0][i]++;
if(a[i][j]=='I') cnt[1][j]++;
}
cout<<ans<<'\n';
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
588 KB |
Output is correct |
| 6 |
Correct |
1 ms |
588 KB |
Output is correct |
| 7 |
Correct |
1 ms |
588 KB |
Output is correct |
| 8 |
Correct |
1 ms |
588 KB |
Output is correct |
| 9 |
Correct |
1 ms |
588 KB |
Output is correct |
| 10 |
Correct |
1 ms |
588 KB |
Output is correct |
| 11 |
Correct |
1 ms |
588 KB |
Output is correct |
| 12 |
Correct |
1 ms |
588 KB |
Output is correct |
| 13 |
Correct |
1 ms |
588 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
588 KB |
Output is correct |
| 6 |
Correct |
1 ms |
588 KB |
Output is correct |
| 7 |
Correct |
1 ms |
588 KB |
Output is correct |
| 8 |
Correct |
1 ms |
588 KB |
Output is correct |
| 9 |
Correct |
1 ms |
588 KB |
Output is correct |
| 10 |
Correct |
1 ms |
588 KB |
Output is correct |
| 11 |
Correct |
1 ms |
588 KB |
Output is correct |
| 12 |
Correct |
1 ms |
588 KB |
Output is correct |
| 13 |
Correct |
1 ms |
588 KB |
Output is correct |
| 14 |
Correct |
5 ms |
1792 KB |
Output is correct |
| 15 |
Correct |
1 ms |
1484 KB |
Output is correct |
| 16 |
Correct |
3 ms |
1096 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
6 ms |
1740 KB |
Output is correct |
| 19 |
Correct |
6 ms |
1740 KB |
Output is correct |
| 20 |
Correct |
4 ms |
1676 KB |
Output is correct |
| 21 |
Correct |
6 ms |
1740 KB |
Output is correct |
| 22 |
Correct |
4 ms |
1740 KB |
Output is correct |
| 23 |
Correct |
4 ms |
1740 KB |
Output is correct |
| 24 |
Correct |
6 ms |
1740 KB |
Output is correct |
| 25 |
Correct |
4 ms |
1740 KB |
Output is correct |
| 26 |
Correct |
5 ms |
1664 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
588 KB |
Output is correct |
| 6 |
Correct |
1 ms |
588 KB |
Output is correct |
| 7 |
Correct |
1 ms |
588 KB |
Output is correct |
| 8 |
Correct |
1 ms |
588 KB |
Output is correct |
| 9 |
Correct |
1 ms |
588 KB |
Output is correct |
| 10 |
Correct |
1 ms |
588 KB |
Output is correct |
| 11 |
Correct |
1 ms |
588 KB |
Output is correct |
| 12 |
Correct |
1 ms |
588 KB |
Output is correct |
| 13 |
Correct |
1 ms |
588 KB |
Output is correct |
| 14 |
Correct |
5 ms |
1792 KB |
Output is correct |
| 15 |
Correct |
1 ms |
1484 KB |
Output is correct |
| 16 |
Correct |
3 ms |
1096 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
6 ms |
1740 KB |
Output is correct |
| 19 |
Correct |
6 ms |
1740 KB |
Output is correct |
| 20 |
Correct |
4 ms |
1676 KB |
Output is correct |
| 21 |
Correct |
6 ms |
1740 KB |
Output is correct |
| 22 |
Correct |
4 ms |
1740 KB |
Output is correct |
| 23 |
Correct |
4 ms |
1740 KB |
Output is correct |
| 24 |
Correct |
6 ms |
1740 KB |
Output is correct |
| 25 |
Correct |
4 ms |
1740 KB |
Output is correct |
| 26 |
Correct |
5 ms |
1664 KB |
Output is correct |
| 27 |
Correct |
160 ms |
9236 KB |
Output is correct |
| 28 |
Correct |
4 ms |
7116 KB |
Output is correct |
| 29 |
Correct |
13 ms |
1100 KB |
Output is correct |
| 30 |
Correct |
1 ms |
332 KB |
Output is correct |
| 31 |
Correct |
118 ms |
7624 KB |
Output is correct |
| 32 |
Correct |
125 ms |
9156 KB |
Output is correct |
| 33 |
Correct |
126 ms |
9036 KB |
Output is correct |
| 34 |
Correct |
135 ms |
8888 KB |
Output is correct |
| 35 |
Correct |
128 ms |
9184 KB |
Output is correct |
| 36 |
Correct |
121 ms |
9040 KB |
Output is correct |
| 37 |
Correct |
164 ms |
9156 KB |
Output is correct |
| 38 |
Correct |
91 ms |
7624 KB |
Output is correct |
| 39 |
Correct |
89 ms |
7676 KB |
Output is correct |
