#include <iostream>
#include <cstdio>
using namespace std;
const int N = 3005, M = 3005;
int m, n, f[M][N], g[M][N];
char s[M][N];
long long ans = 0;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cin >> m >> n;
for (int i = 0; i < m; i++)
cin >> s[i];
for (int i = m - 1; i >= 0; i--)
for (int j = n - 1; j >= 0; j--)
{
f[i][j] = f[i + 1][j] + (s[i][j] == 'I');
g[i][j] = g[i][j + 1] + (s[i][j] == 'O');
if (s[i][j] == 'J')
ans += 1LL * f[i][j] * g[i][j];
}
cout << ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
384 KB |
Output is correct |
| 2 |
Correct |
2 ms |
384 KB |
Output is correct |
| 3 |
Correct |
2 ms |
384 KB |
Output is correct |
| 4 |
Correct |
2 ms |
384 KB |
Output is correct |
| 5 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 10 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 12 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1408 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
384 KB |
Output is correct |
| 2 |
Correct |
2 ms |
384 KB |
Output is correct |
| 3 |
Correct |
2 ms |
384 KB |
Output is correct |
| 4 |
Correct |
2 ms |
384 KB |
Output is correct |
| 5 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 10 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 12 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 14 |
Correct |
11 ms |
7296 KB |
Output is correct |
| 15 |
Correct |
7 ms |
4992 KB |
Output is correct |
| 16 |
Correct |
6 ms |
4224 KB |
Output is correct |
| 17 |
Correct |
2 ms |
512 KB |
Output is correct |
| 18 |
Correct |
9 ms |
7808 KB |
Output is correct |
| 19 |
Correct |
9 ms |
7680 KB |
Output is correct |
| 20 |
Correct |
10 ms |
7680 KB |
Output is correct |
| 21 |
Correct |
16 ms |
7808 KB |
Output is correct |
| 22 |
Correct |
9 ms |
7680 KB |
Output is correct |
| 23 |
Correct |
10 ms |
7680 KB |
Output is correct |
| 24 |
Correct |
13 ms |
7808 KB |
Output is correct |
| 25 |
Correct |
9 ms |
7680 KB |
Output is correct |
| 26 |
Correct |
10 ms |
7652 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
384 KB |
Output is correct |
| 2 |
Correct |
2 ms |
384 KB |
Output is correct |
| 3 |
Correct |
2 ms |
384 KB |
Output is correct |
| 4 |
Correct |
2 ms |
384 KB |
Output is correct |
| 5 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 6 |
Correct |
2 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 10 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 12 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 14 |
Correct |
11 ms |
7296 KB |
Output is correct |
| 15 |
Correct |
7 ms |
4992 KB |
Output is correct |
| 16 |
Correct |
6 ms |
4224 KB |
Output is correct |
| 17 |
Correct |
2 ms |
512 KB |
Output is correct |
| 18 |
Correct |
9 ms |
7808 KB |
Output is correct |
| 19 |
Correct |
9 ms |
7680 KB |
Output is correct |
| 20 |
Correct |
10 ms |
7680 KB |
Output is correct |
| 21 |
Correct |
16 ms |
7808 KB |
Output is correct |
| 22 |
Correct |
9 ms |
7680 KB |
Output is correct |
| 23 |
Correct |
10 ms |
7680 KB |
Output is correct |
| 24 |
Correct |
13 ms |
7808 KB |
Output is correct |
| 25 |
Correct |
9 ms |
7680 KB |
Output is correct |
| 26 |
Correct |
10 ms |
7652 KB |
Output is correct |
| 27 |
Correct |
111 ms |
79860 KB |
Output is correct |
| 28 |
Correct |
25 ms |
26104 KB |
Output is correct |
| 29 |
Correct |
12 ms |
7168 KB |
Output is correct |
| 30 |
Correct |
3 ms |
640 KB |
Output is correct |
| 31 |
Correct |
101 ms |
66552 KB |
Output is correct |
| 32 |
Correct |
85 ms |
79732 KB |
Output is correct |
| 33 |
Correct |
94 ms |
79608 KB |
Output is correct |
| 34 |
Correct |
117 ms |
77148 KB |
Output is correct |
| 35 |
Correct |
92 ms |
79864 KB |
Output is correct |
| 36 |
Correct |
100 ms |
79512 KB |
Output is correct |
| 37 |
Correct |
107 ms |
79736 KB |
Output is correct |
| 38 |
Correct |
69 ms |
71012 KB |
Output is correct |
| 39 |
Correct |
89 ms |
70676 KB |
Output is correct |
