#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define fs first
#define sc second
#define pb push_back
void solve() {
int n,m;
cin>>n>>m;
string a[n];
for(int i=0;i<n;i++)cin>>a[i];
ll ans=0,c1[n+1][m+1],c2[n+1][m+1];
memset(c1,0,sizeof(c1));
memset(c2,0,sizeof(c2));
for(int i=n-1;i>-1;i--){
for(int j=m-1;j>-1;j--){
c1[i][j]=c1[i+1][j]+(a[i][j]=='I');
c2[i][j]=c2[i][j+1]+(a[i][j]=='O');
if(a[i][j]=='J')ans+=c1[i+1][j]*c2[i][j+1];
}
}
cout<<ans;
}
int main() {
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
solve();
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
604 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
604 KB |
Output is correct |
| 8 |
Correct |
0 ms |
604 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
604 KB |
Output is correct |
| 11 |
Correct |
0 ms |
604 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
604 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
604 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
604 KB |
Output is correct |
| 8 |
Correct |
0 ms |
604 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
604 KB |
Output is correct |
| 11 |
Correct |
0 ms |
604 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
604 KB |
Output is correct |
| 14 |
Correct |
3 ms |
3676 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4444 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4440 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4440 KB |
Output is correct |
| 22 |
Correct |
3 ms |
4444 KB |
Output is correct |
| 23 |
Correct |
3 ms |
4444 KB |
Output is correct |
| 24 |
Correct |
4 ms |
4444 KB |
Output is correct |
| 25 |
Correct |
3 ms |
4444 KB |
Output is correct |
| 26 |
Correct |
3 ms |
4444 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
0 ms |
348 KB |
Output is correct |
| 3 |
Correct |
0 ms |
348 KB |
Output is correct |
| 4 |
Correct |
0 ms |
344 KB |
Output is correct |
| 5 |
Correct |
0 ms |
604 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
604 KB |
Output is correct |
| 8 |
Correct |
0 ms |
604 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
0 ms |
604 KB |
Output is correct |
| 11 |
Correct |
0 ms |
604 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
1 ms |
604 KB |
Output is correct |
| 14 |
Correct |
3 ms |
3676 KB |
Output is correct |
| 15 |
Correct |
0 ms |
348 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
3 ms |
4444 KB |
Output is correct |
| 19 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 20 |
Correct |
3 ms |
4440 KB |
Output is correct |
| 21 |
Correct |
3 ms |
4440 KB |
Output is correct |
| 22 |
Correct |
3 ms |
4444 KB |
Output is correct |
| 23 |
Correct |
3 ms |
4444 KB |
Output is correct |
| 24 |
Correct |
4 ms |
4444 KB |
Output is correct |
| 25 |
Correct |
3 ms |
4444 KB |
Output is correct |
| 26 |
Correct |
3 ms |
4444 KB |
Output is correct |
| 27 |
Correct |
106 ms |
142656 KB |
Output is correct |
| 28 |
Correct |
1 ms |
860 KB |
Output is correct |
| 29 |
Correct |
7 ms |
11184 KB |
Output is correct |
| 30 |
Correct |
0 ms |
860 KB |
Output is correct |
| 31 |
Correct |
81 ms |
105044 KB |
Output is correct |
| 32 |
Correct |
93 ms |
150096 KB |
Output is correct |
| 33 |
Correct |
97 ms |
150536 KB |
Output is correct |
| 34 |
Correct |
94 ms |
121684 KB |
Output is correct |
| 35 |
Correct |
90 ms |
150096 KB |
Output is correct |
| 36 |
Correct |
96 ms |
150672 KB |
Output is correct |
| 37 |
Correct |
117 ms |
151068 KB |
Output is correct |
| 38 |
Correct |
67 ms |
104048 KB |
Output is correct |
| 39 |
Correct |
71 ms |
104532 KB |
Output is correct |
