/*
Bitaro the Brave
https://oj.uz/problem/view/JOI19_ho_t1
*/
#include <bits/stdc++.h>
using namespace std;
const int N = 3000;
int main() {
ios::sync_with_stdio(0), cin.tie(0);
int n, m; cin >> n >> m;
static string s[N];
for (int i = 0; i < n; i++) cin >> s[i];
static int co[N][N], ci[N][N];
long long ans = 0;
for (int i = n - 1; i >= 0; i--)
for (int j = m - 1; j >= 0; j--) {
if (j < m - 1) co[i][j] += co[i][j + 1];
if (i < n - 1) ci[i][j] += ci[i + 1][j];
if (s[i][j] == 'J') ans += co[i][j] * ci[i][j];
else if (s[i][j] == 'O') co[i][j]++;
else ci[i][j]++;
}
cout << ans << '\n';
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
328 KB |
Output is correct |
| 4 |
Correct |
1 ms |
468 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1232 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1232 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1108 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
328 KB |
Output is correct |
| 4 |
Correct |
1 ms |
468 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1232 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1232 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 14 |
Correct |
4 ms |
6228 KB |
Output is correct |
| 15 |
Correct |
2 ms |
3784 KB |
Output is correct |
| 16 |
Correct |
3 ms |
3732 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
5 ms |
6792 KB |
Output is correct |
| 19 |
Correct |
4 ms |
6684 KB |
Output is correct |
| 20 |
Correct |
4 ms |
6612 KB |
Output is correct |
| 21 |
Correct |
5 ms |
6872 KB |
Output is correct |
| 22 |
Correct |
4 ms |
6744 KB |
Output is correct |
| 23 |
Correct |
4 ms |
6612 KB |
Output is correct |
| 24 |
Correct |
5 ms |
6796 KB |
Output is correct |
| 25 |
Correct |
4 ms |
6688 KB |
Output is correct |
| 26 |
Correct |
4 ms |
6616 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
0 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
328 KB |
Output is correct |
| 4 |
Correct |
1 ms |
468 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1232 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1232 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1108 KB |
Output is correct |
| 14 |
Correct |
4 ms |
6228 KB |
Output is correct |
| 15 |
Correct |
2 ms |
3784 KB |
Output is correct |
| 16 |
Correct |
3 ms |
3732 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
5 ms |
6792 KB |
Output is correct |
| 19 |
Correct |
4 ms |
6684 KB |
Output is correct |
| 20 |
Correct |
4 ms |
6612 KB |
Output is correct |
| 21 |
Correct |
5 ms |
6872 KB |
Output is correct |
| 22 |
Correct |
4 ms |
6744 KB |
Output is correct |
| 23 |
Correct |
4 ms |
6612 KB |
Output is correct |
| 24 |
Correct |
5 ms |
6796 KB |
Output is correct |
| 25 |
Correct |
4 ms |
6688 KB |
Output is correct |
| 26 |
Correct |
4 ms |
6616 KB |
Output is correct |
| 27 |
Correct |
103 ms |
88184 KB |
Output is correct |
| 28 |
Correct |
9 ms |
19156 KB |
Output is correct |
| 29 |
Correct |
6 ms |
7764 KB |
Output is correct |
| 30 |
Correct |
1 ms |
596 KB |
Output is correct |
| 31 |
Correct |
78 ms |
71824 KB |
Output is correct |
| 32 |
Correct |
76 ms |
89264 KB |
Output is correct |
| 33 |
Correct |
72 ms |
89032 KB |
Output is correct |
| 34 |
Correct |
94 ms |
83252 KB |
Output is correct |
| 35 |
Correct |
70 ms |
89152 KB |
Output is correct |
| 36 |
Correct |
73 ms |
89036 KB |
Output is correct |
| 37 |
Correct |
103 ms |
89460 KB |
Output is correct |
| 38 |
Correct |
58 ms |
71716 KB |
Output is correct |
| 39 |
Correct |
52 ms |
71500 KB |
Output is correct |
