#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif
int main() {
ios::sync_with_stdio(false); cin.tie(nullptr);
int N, M; cin >> N >> M;
vector<string> S(N);
for (int i = 0; i < N; ++i) {
cin >> S[i];
}
vector sf(M, vector<int>(N));
for (int i = 0; i < M; ++i) {
sf[i][N - 1] = S[N - 1][i] == 'I';
for (int j = N - 2; j >= 0; --j) {
sf[i][j] = sf[i][j + 1] + (S[j][i] == 'I');
}
}
long long res = 0;
for (int i = 0; i < N; ++i) {
for (int j = M - 1, cnt = 0; j >= 0; --j) {
cnt += S[i][j] == 'O';
if (S[i][j] == 'J') {
res += cnt * sf[j][i];
}
}
}
cout << res;
return 0;
}
| # |
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 |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 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 |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
2 ms |
1624 KB |
Output is correct |
| 15 |
Correct |
0 ms |
460 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
2 ms |
1976 KB |
Output is correct |
| 19 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 20 |
Correct |
3 ms |
1884 KB |
Output is correct |
| 21 |
Correct |
2 ms |
2136 KB |
Output is correct |
| 22 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1884 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 |
348 KB |
Output is correct |
| 5 |
Correct |
0 ms |
348 KB |
Output is correct |
| 6 |
Correct |
0 ms |
348 KB |
Output is correct |
| 7 |
Correct |
0 ms |
348 KB |
Output is correct |
| 8 |
Correct |
0 ms |
348 KB |
Output is correct |
| 9 |
Correct |
0 ms |
348 KB |
Output is correct |
| 10 |
Correct |
1 ms |
348 KB |
Output is correct |
| 11 |
Correct |
0 ms |
348 KB |
Output is correct |
| 12 |
Correct |
0 ms |
348 KB |
Output is correct |
| 13 |
Correct |
0 ms |
348 KB |
Output is correct |
| 14 |
Correct |
2 ms |
1624 KB |
Output is correct |
| 15 |
Correct |
0 ms |
460 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 17 |
Correct |
0 ms |
348 KB |
Output is correct |
| 18 |
Correct |
2 ms |
1976 KB |
Output is correct |
| 19 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 20 |
Correct |
3 ms |
1884 KB |
Output is correct |
| 21 |
Correct |
2 ms |
2136 KB |
Output is correct |
| 22 |
Correct |
2 ms |
1880 KB |
Output is correct |
| 23 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 24 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 25 |
Correct |
2 ms |
1884 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1884 KB |
Output is correct |
| 27 |
Correct |
81 ms |
51280 KB |
Output is correct |
| 28 |
Correct |
1 ms |
604 KB |
Output is correct |
| 29 |
Correct |
4 ms |
4440 KB |
Output is correct |
| 30 |
Correct |
1 ms |
604 KB |
Output is correct |
| 31 |
Correct |
56 ms |
37812 KB |
Output is correct |
| 32 |
Correct |
65 ms |
53836 KB |
Output is correct |
| 33 |
Correct |
62 ms |
54588 KB |
Output is correct |
| 34 |
Correct |
67 ms |
43728 KB |
Output is correct |
| 35 |
Correct |
70 ms |
53852 KB |
Output is correct |
| 36 |
Correct |
61 ms |
53988 KB |
Output is correct |
| 37 |
Correct |
91 ms |
54428 KB |
Output is correct |
| 38 |
Correct |
48 ms |
37468 KB |
Output is correct |
| 39 |
Correct |
40 ms |
37456 KB |
Output is correct |
