#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 |