#include <bits/stdc++.h>
using namespace std;
int dp[3000][3000][2];
int main()
{
ios_base::sync_with_stdio(0); cin.tie(0);
int n,m;
cin>>n>>m;
long long ans=0;
string s[n];
for (int i=0;i<n;++i)
cin>>s[i];
for (int i=n-2;i>=0;--i)
for (int j=m-1;j>=0;--j)
dp[i][j][0]=dp[i+1][j][0]+(s[i+1][j]=='I');
for (int j=m-2;j>=0;--j)
for (int i=n-1;i>=0;--i)
dp[i][j][1]=dp[i][j+1][1]+(s[i][j+1]=='O');
for (int i=0;i<n;++i)
for (int j=0;j<m;++j)
if (s[i][j]=='J')
ans+=dp[i][j][0]*dp[i][j][1];
cout<<ans;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
716 KB |
Output is correct |
| 6 |
Correct |
1 ms |
716 KB |
Output is correct |
| 7 |
Correct |
1 ms |
716 KB |
Output is correct |
| 8 |
Correct |
1 ms |
716 KB |
Output is correct |
| 9 |
Correct |
1 ms |
716 KB |
Output is correct |
| 10 |
Correct |
1 ms |
716 KB |
Output is correct |
| 11 |
Correct |
1 ms |
716 KB |
Output is correct |
| 12 |
Correct |
2 ms |
716 KB |
Output is correct |
| 13 |
Correct |
2 ms |
716 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
716 KB |
Output is correct |
| 6 |
Correct |
1 ms |
716 KB |
Output is correct |
| 7 |
Correct |
1 ms |
716 KB |
Output is correct |
| 8 |
Correct |
1 ms |
716 KB |
Output is correct |
| 9 |
Correct |
1 ms |
716 KB |
Output is correct |
| 10 |
Correct |
1 ms |
716 KB |
Output is correct |
| 11 |
Correct |
1 ms |
716 KB |
Output is correct |
| 12 |
Correct |
2 ms |
716 KB |
Output is correct |
| 13 |
Correct |
2 ms |
716 KB |
Output is correct |
| 14 |
Correct |
4 ms |
4172 KB |
Output is correct |
| 15 |
Correct |
2 ms |
1996 KB |
Output is correct |
| 16 |
Correct |
3 ms |
2508 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
5 ms |
4804 KB |
Output is correct |
| 19 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 20 |
Correct |
4 ms |
4684 KB |
Output is correct |
| 21 |
Correct |
6 ms |
4684 KB |
Output is correct |
| 22 |
Correct |
4 ms |
4684 KB |
Output is correct |
| 23 |
Correct |
4 ms |
4684 KB |
Output is correct |
| 24 |
Correct |
5 ms |
4684 KB |
Output is correct |
| 25 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 26 |
Correct |
4 ms |
4684 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
332 KB |
Output is correct |
| 5 |
Correct |
1 ms |
716 KB |
Output is correct |
| 6 |
Correct |
1 ms |
716 KB |
Output is correct |
| 7 |
Correct |
1 ms |
716 KB |
Output is correct |
| 8 |
Correct |
1 ms |
716 KB |
Output is correct |
| 9 |
Correct |
1 ms |
716 KB |
Output is correct |
| 10 |
Correct |
1 ms |
716 KB |
Output is correct |
| 11 |
Correct |
1 ms |
716 KB |
Output is correct |
| 12 |
Correct |
2 ms |
716 KB |
Output is correct |
| 13 |
Correct |
2 ms |
716 KB |
Output is correct |
| 14 |
Correct |
4 ms |
4172 KB |
Output is correct |
| 15 |
Correct |
2 ms |
1996 KB |
Output is correct |
| 16 |
Correct |
3 ms |
2508 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
5 ms |
4804 KB |
Output is correct |
| 19 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 20 |
Correct |
4 ms |
4684 KB |
Output is correct |
| 21 |
Correct |
6 ms |
4684 KB |
Output is correct |
| 22 |
Correct |
4 ms |
4684 KB |
Output is correct |
| 23 |
Correct |
4 ms |
4684 KB |
Output is correct |
| 24 |
Correct |
5 ms |
4684 KB |
Output is correct |
| 25 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 26 |
Correct |
4 ms |
4684 KB |
Output is correct |
| 27 |
Correct |
229 ms |
88260 KB |
Output is correct |
| 28 |
Correct |
6 ms |
9936 KB |
Output is correct |
| 29 |
Correct |
8 ms |
7628 KB |
Output is correct |
| 30 |
Correct |
1 ms |
460 KB |
Output is correct |
| 31 |
Correct |
169 ms |
71828 KB |
Output is correct |
| 32 |
Correct |
211 ms |
89156 KB |
Output is correct |
| 33 |
Correct |
203 ms |
89052 KB |
Output is correct |
| 34 |
Correct |
198 ms |
83276 KB |
Output is correct |
| 35 |
Correct |
220 ms |
89072 KB |
Output is correct |
| 36 |
Correct |
206 ms |
89156 KB |
Output is correct |
| 37 |
Correct |
246 ms |
89300 KB |
Output is correct |
| 38 |
Correct |
142 ms |
71440 KB |
Output is correct |
| 39 |
Correct |
141 ms |
71552 KB |
Output is correct |
