#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 3000 + 66;
string s[N];
ll d[N][N], r[N][N], Ans;
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0), cout.tie(0);
int n, m;
cin >> n >> m;
for (int i = 0 ; i < n ; ++ i) cin >> s[i];
for (int i = n - 1 ; i >= 0 ; -- i) {
for (int j = m - 1 ; j >= 0 ; -- j) {
r[i][j] = s[i][j] == 'O';
if (j + 1 < m) r[i][j] += r[i][j + 1];
d[i][j] = s[i][j] == 'I';
if (i + 1 < n) d[i][j] += d[i + 1][j];
Ans += (s[i][j] == 'J') * d[i][j] * r[i][j];
}
}
cout << Ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
492 KB |
Output is correct |
| 2 |
Correct |
1 ms |
492 KB |
Output is correct |
| 3 |
Correct |
1 ms |
492 KB |
Output is correct |
| 4 |
Correct |
1 ms |
492 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1260 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1260 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1260 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
492 KB |
Output is correct |
| 2 |
Correct |
1 ms |
492 KB |
Output is correct |
| 3 |
Correct |
1 ms |
492 KB |
Output is correct |
| 4 |
Correct |
1 ms |
492 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1260 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1260 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1260 KB |
Output is correct |
| 14 |
Correct |
6 ms |
7916 KB |
Output is correct |
| 15 |
Correct |
2 ms |
3948 KB |
Output is correct |
| 16 |
Correct |
4 ms |
4844 KB |
Output is correct |
| 17 |
Correct |
1 ms |
492 KB |
Output is correct |
| 18 |
Correct |
6 ms |
8940 KB |
Output is correct |
| 19 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 20 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 21 |
Correct |
6 ms |
8940 KB |
Output is correct |
| 22 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 23 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 24 |
Correct |
6 ms |
8940 KB |
Output is correct |
| 25 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 26 |
Correct |
6 ms |
8684 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
492 KB |
Output is correct |
| 2 |
Correct |
1 ms |
492 KB |
Output is correct |
| 3 |
Correct |
1 ms |
492 KB |
Output is correct |
| 4 |
Correct |
1 ms |
492 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1260 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1260 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1388 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1260 KB |
Output is correct |
| 14 |
Correct |
6 ms |
7916 KB |
Output is correct |
| 15 |
Correct |
2 ms |
3948 KB |
Output is correct |
| 16 |
Correct |
4 ms |
4844 KB |
Output is correct |
| 17 |
Correct |
1 ms |
492 KB |
Output is correct |
| 18 |
Correct |
6 ms |
8940 KB |
Output is correct |
| 19 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 20 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 21 |
Correct |
6 ms |
8940 KB |
Output is correct |
| 22 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 23 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 24 |
Correct |
6 ms |
8940 KB |
Output is correct |
| 25 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 26 |
Correct |
6 ms |
8684 KB |
Output is correct |
| 27 |
Correct |
127 ms |
161932 KB |
Output is correct |
| 28 |
Correct |
11 ms |
19564 KB |
Output is correct |
| 29 |
Correct |
11 ms |
14060 KB |
Output is correct |
| 30 |
Correct |
2 ms |
876 KB |
Output is correct |
| 31 |
Correct |
98 ms |
131052 KB |
Output is correct |
| 32 |
Correct |
131 ms |
162796 KB |
Output is correct |
| 33 |
Correct |
166 ms |
162432 KB |
Output is correct |
| 34 |
Correct |
114 ms |
151916 KB |
Output is correct |
| 35 |
Correct |
135 ms |
162924 KB |
Output is correct |
| 36 |
Correct |
127 ms |
162540 KB |
Output is correct |
| 37 |
Correct |
129 ms |
162924 KB |
Output is correct |
| 38 |
Correct |
98 ms |
130156 KB |
Output is correct |
| 39 |
Correct |
98 ms |
130540 KB |
Output is correct |
