#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn = 3005;
char grid[maxn][maxn];
int ocnt[maxn][maxn], icnt[maxn][maxn];
int H, W;
int main()
{
cin >> H >> W;
for (int i = 1; i <= H; i++) {
for (int j = 1; j <= W; j++) {
cin >> grid[i][j];
}
}
for (int i = 1; i <= H; i++) {
for (int j = W; j >= 1; j--) {
ocnt[i][j] = ocnt[i][j+1];
if (grid[i][j] == 'O') ocnt[i][j]++;
}
}
for (int j = 1; j <= W; j++) {
for (int i = H; i >= 1; i--) {
icnt[i][j] = icnt[i+1][j];
if (grid[i][j] == 'I') icnt[i][j]++;
}
}
ll ans = 0;
for (int i = 1; i <= H; i++) {
for (int j = 1; j <= W; j++) {
if (grid[i][j] != 'J') continue;
ans += ocnt[i][j] * icnt[i][j];
}
}
cout << ans << '\n';
}
# |
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 |
3 ms |
384 KB |
Output is correct |
5 |
Correct |
4 ms |
1536 KB |
Output is correct |
6 |
Correct |
5 ms |
1536 KB |
Output is correct |
7 |
Correct |
4 ms |
1456 KB |
Output is correct |
8 |
Correct |
4 ms |
1536 KB |
Output is correct |
9 |
Correct |
4 ms |
1536 KB |
Output is correct |
10 |
Correct |
4 ms |
1408 KB |
Output is correct |
11 |
Correct |
3 ms |
1536 KB |
Output is correct |
12 |
Correct |
3 ms |
1408 KB |
Output is correct |
13 |
Correct |
4 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 |
3 ms |
384 KB |
Output is correct |
5 |
Correct |
4 ms |
1536 KB |
Output is correct |
6 |
Correct |
5 ms |
1536 KB |
Output is correct |
7 |
Correct |
4 ms |
1456 KB |
Output is correct |
8 |
Correct |
4 ms |
1536 KB |
Output is correct |
9 |
Correct |
4 ms |
1536 KB |
Output is correct |
10 |
Correct |
4 ms |
1408 KB |
Output is correct |
11 |
Correct |
3 ms |
1536 KB |
Output is correct |
12 |
Correct |
3 ms |
1408 KB |
Output is correct |
13 |
Correct |
4 ms |
1408 KB |
Output is correct |
14 |
Correct |
24 ms |
7296 KB |
Output is correct |
15 |
Correct |
6 ms |
4992 KB |
Output is correct |
16 |
Correct |
14 ms |
4224 KB |
Output is correct |
17 |
Correct |
2 ms |
512 KB |
Output is correct |
18 |
Correct |
35 ms |
7800 KB |
Output is correct |
19 |
Correct |
29 ms |
7644 KB |
Output is correct |
20 |
Correct |
28 ms |
7672 KB |
Output is correct |
21 |
Correct |
33 ms |
7928 KB |
Output is correct |
22 |
Correct |
33 ms |
7676 KB |
Output is correct |
23 |
Correct |
25 ms |
7672 KB |
Output is correct |
24 |
Correct |
29 ms |
7680 KB |
Output is correct |
25 |
Correct |
33 ms |
7672 KB |
Output is correct |
26 |
Correct |
32 ms |
7552 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 |
3 ms |
384 KB |
Output is correct |
5 |
Correct |
4 ms |
1536 KB |
Output is correct |
6 |
Correct |
5 ms |
1536 KB |
Output is correct |
7 |
Correct |
4 ms |
1456 KB |
Output is correct |
8 |
Correct |
4 ms |
1536 KB |
Output is correct |
9 |
Correct |
4 ms |
1536 KB |
Output is correct |
10 |
Correct |
4 ms |
1408 KB |
Output is correct |
11 |
Correct |
3 ms |
1536 KB |
Output is correct |
12 |
Correct |
3 ms |
1408 KB |
Output is correct |
13 |
Correct |
4 ms |
1408 KB |
Output is correct |
14 |
Correct |
24 ms |
7296 KB |
Output is correct |
15 |
Correct |
6 ms |
4992 KB |
Output is correct |
16 |
Correct |
14 ms |
4224 KB |
Output is correct |
17 |
Correct |
2 ms |
512 KB |
Output is correct |
18 |
Correct |
35 ms |
7800 KB |
Output is correct |
19 |
Correct |
29 ms |
7644 KB |
Output is correct |
20 |
Correct |
28 ms |
7672 KB |
Output is correct |
21 |
Correct |
33 ms |
7928 KB |
Output is correct |
22 |
Correct |
33 ms |
7676 KB |
Output is correct |
23 |
Correct |
25 ms |
7672 KB |
Output is correct |
24 |
Correct |
29 ms |
7680 KB |
Output is correct |
25 |
Correct |
33 ms |
7672 KB |
Output is correct |
26 |
Correct |
32 ms |
7552 KB |
Output is correct |
27 |
Execution timed out |
1020 ms |
79888 KB |
Time limit exceeded |
28 |
Halted |
0 ms |
0 KB |
- |