#include <bits/stdc++.h>
using namespace std;
using nagai = long long;
#define sz(x) int((x).size())
const int N=3003;
string ss[N];
int cri[N][N],cdo[N][N];
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
int n,m;
cin>>n>>m;
for(int i=0;i<n;++i)cin>>ss[i];
for(int i=0;i<n;++i)
for(int j=m-1;j>=0;j--)
if(j==m-1)cri[i][j]=(ss[i][j]=='O');else cri[i][j]=(ss[i][j]=='O')+cri[i][j+1];
nagai ans=0;
for(int i=n-1;i>=0;--i)
for(int j=0;j<m;++j){
if(i==n-1)cdo[i][j]=(ss[i][j]=='I');else cdo[i][j]=(ss[i][j]=='I')+cdo[i+1][j];
if(ss[i][j]=='J')
ans+=cdo[i][j]*cri[i][j];
}
cout<<ans<<'\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
512 KB |
Output is correct |
| 2 |
Correct |
3 ms |
512 KB |
Output is correct |
| 3 |
Correct |
2 ms |
512 KB |
Output is correct |
| 4 |
Correct |
3 ms |
512 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1280 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1280 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 11 |
Correct |
0 ms |
1408 KB |
Output is correct |
| 12 |
Correct |
4 ms |
1280 KB |
Output is correct |
| 13 |
Correct |
2 ms |
1280 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
512 KB |
Output is correct |
| 2 |
Correct |
3 ms |
512 KB |
Output is correct |
| 3 |
Correct |
2 ms |
512 KB |
Output is correct |
| 4 |
Correct |
3 ms |
512 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1280 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1280 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 11 |
Correct |
0 ms |
1408 KB |
Output is correct |
| 12 |
Correct |
4 ms |
1280 KB |
Output is correct |
| 13 |
Correct |
2 ms |
1280 KB |
Output is correct |
| 14 |
Correct |
9 ms |
6144 KB |
Output is correct |
| 15 |
Correct |
5 ms |
3840 KB |
Output is correct |
| 16 |
Correct |
7 ms |
3584 KB |
Output is correct |
| 17 |
Correct |
2 ms |
512 KB |
Output is correct |
| 18 |
Correct |
11 ms |
6656 KB |
Output is correct |
| 19 |
Correct |
8 ms |
6528 KB |
Output is correct |
| 20 |
Correct |
9 ms |
6524 KB |
Output is correct |
| 21 |
Correct |
11 ms |
6656 KB |
Output is correct |
| 22 |
Correct |
9 ms |
6528 KB |
Output is correct |
| 23 |
Correct |
10 ms |
6656 KB |
Output is correct |
| 24 |
Correct |
10 ms |
6656 KB |
Output is correct |
| 25 |
Correct |
2 ms |
6552 KB |
Output is correct |
| 26 |
Correct |
9 ms |
6548 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
512 KB |
Output is correct |
| 2 |
Correct |
3 ms |
512 KB |
Output is correct |
| 3 |
Correct |
2 ms |
512 KB |
Output is correct |
| 4 |
Correct |
3 ms |
512 KB |
Output is correct |
| 5 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1280 KB |
Output is correct |
| 8 |
Correct |
2 ms |
1280 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1280 KB |
Output is correct |
| 11 |
Correct |
0 ms |
1408 KB |
Output is correct |
| 12 |
Correct |
4 ms |
1280 KB |
Output is correct |
| 13 |
Correct |
2 ms |
1280 KB |
Output is correct |
| 14 |
Correct |
9 ms |
6144 KB |
Output is correct |
| 15 |
Correct |
5 ms |
3840 KB |
Output is correct |
| 16 |
Correct |
7 ms |
3584 KB |
Output is correct |
| 17 |
Correct |
2 ms |
512 KB |
Output is correct |
| 18 |
Correct |
11 ms |
6656 KB |
Output is correct |
| 19 |
Correct |
8 ms |
6528 KB |
Output is correct |
| 20 |
Correct |
9 ms |
6524 KB |
Output is correct |
| 21 |
Correct |
11 ms |
6656 KB |
Output is correct |
| 22 |
Correct |
9 ms |
6528 KB |
Output is correct |
| 23 |
Correct |
10 ms |
6656 KB |
Output is correct |
| 24 |
Correct |
10 ms |
6656 KB |
Output is correct |
| 25 |
Correct |
2 ms |
6552 KB |
Output is correct |
| 26 |
Correct |
9 ms |
6548 KB |
Output is correct |
| 27 |
Correct |
136 ms |
80092 KB |
Output is correct |
| 28 |
Correct |
18 ms |
19252 KB |
Output is correct |
| 29 |
Correct |
11 ms |
7168 KB |
Output is correct |
| 30 |
Correct |
2 ms |
640 KB |
Output is correct |
| 31 |
Correct |
120 ms |
65836 KB |
Output is correct |
| 32 |
Correct |
132 ms |
80504 KB |
Output is correct |
| 33 |
Correct |
123 ms |
80376 KB |
Output is correct |
| 34 |
Correct |
152 ms |
76332 KB |
Output is correct |
| 35 |
Correct |
146 ms |
80572 KB |
Output is correct |
| 36 |
Correct |
146 ms |
80360 KB |
Output is correct |
| 37 |
Correct |
192 ms |
80648 KB |
Output is correct |
| 38 |
Correct |
91 ms |
65876 KB |
Output is correct |
| 39 |
Correct |
99 ms |
65604 KB |
Output is correct |
