#include<bits/stdc++.h>
using namespace std;
const int MAXN=3005;
char a[MAXN][MAXN];
int sufO[MAXN][MAXN],sufI[MAXN][MAXN];
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int n,m;
cin >> n >> m;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++)cin >> a[i][j];
}
for(int i=1;i<=n;i++){
for(int j=m;j>=1;j--){
sufO[i][j]=sufO[i][j+1];
if(a[i][j]=='O')sufO[i][j]++;
}
}
for(int i=1;i<=m;i++){
for(int j=n;j>=1;j--){
sufI[i][j]=sufI[i][j+1];
if(a[j][i]=='I')sufI[i][j]++;
}
}
long long ans=0;
for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
if(a[i][j]=='J'){
ans+=(sufO[i][j+1]*sufI[j][i+1]);
}
}
}
cout << ans << '\n';
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1408 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 14 |
Correct |
11 ms |
7040 KB |
Output is correct |
| 15 |
Correct |
2 ms |
3328 KB |
Output is correct |
| 16 |
Correct |
7 ms |
5248 KB |
Output is correct |
| 17 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 18 |
Correct |
12 ms |
8064 KB |
Output is correct |
| 19 |
Correct |
10 ms |
7808 KB |
Output is correct |
| 20 |
Correct |
10 ms |
7840 KB |
Output is correct |
| 21 |
Correct |
13 ms |
8064 KB |
Output is correct |
| 22 |
Correct |
12 ms |
7808 KB |
Output is correct |
| 23 |
Correct |
10 ms |
7936 KB |
Output is correct |
| 24 |
Correct |
13 ms |
8064 KB |
Output is correct |
| 25 |
Correct |
11 ms |
7936 KB |
Output is correct |
| 26 |
Correct |
10 ms |
7936 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
384 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
384 KB |
Output is correct |
| 5 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 7 |
Correct |
2 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1408 KB |
Output is correct |
| 14 |
Correct |
11 ms |
7040 KB |
Output is correct |
| 15 |
Correct |
2 ms |
3328 KB |
Output is correct |
| 16 |
Correct |
7 ms |
5248 KB |
Output is correct |
| 17 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 18 |
Correct |
12 ms |
8064 KB |
Output is correct |
| 19 |
Correct |
10 ms |
7808 KB |
Output is correct |
| 20 |
Correct |
10 ms |
7840 KB |
Output is correct |
| 21 |
Correct |
13 ms |
8064 KB |
Output is correct |
| 22 |
Correct |
12 ms |
7808 KB |
Output is correct |
| 23 |
Correct |
10 ms |
7936 KB |
Output is correct |
| 24 |
Correct |
13 ms |
8064 KB |
Output is correct |
| 25 |
Correct |
11 ms |
7936 KB |
Output is correct |
| 26 |
Correct |
10 ms |
7936 KB |
Output is correct |
| 27 |
Correct |
340 ms |
86008 KB |
Output is correct |
| 28 |
Correct |
11 ms |
16768 KB |
Output is correct |
| 29 |
Correct |
27 ms |
17408 KB |
Output is correct |
| 30 |
Correct |
8 ms |
9856 KB |
Output is correct |
| 31 |
Correct |
255 ms |
72664 KB |
Output is correct |
| 32 |
Correct |
301 ms |
88256 KB |
Output is correct |
| 33 |
Correct |
320 ms |
88444 KB |
Output is correct |
| 34 |
Correct |
296 ms |
79480 KB |
Output is correct |
| 35 |
Correct |
316 ms |
88440 KB |
Output is correct |
| 36 |
Correct |
312 ms |
88580 KB |
Output is correct |
| 37 |
Correct |
371 ms |
88716 KB |
Output is correct |
| 38 |
Correct |
208 ms |
72312 KB |
Output is correct |
| 39 |
Correct |
219 ms |
72440 KB |
Output is correct |
