#include <bits/stdc++.h>
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define x first
#define y second
using namespace std;
using ll = long long;
#define int ll
const int N = 3003;
int n, m;
char s[N][N];
int a[N][N];
int b[N][N];
int ans = 0;
signed main() {
#ifdef LC
assert(freopen("input.txt", "r", stdin));
#endif
ios::sync_with_stdio(0), cin.tie(0);
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) {
a[i][j] = a[i][j + 1] + (s[i][j] == 'O');
b[i][j] = b[i + 1][j] + (s[i][j] == 'I');
if (s[i][j] == 'J') {
ans += a[i][j + 1] * b[i + 1][j];
}
}
}
cout << ans << "\n";
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
384 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
512 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1536 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
384 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
512 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 14 |
Correct |
6 ms |
9088 KB |
Output is correct |
| 15 |
Correct |
3 ms |
5120 KB |
Output is correct |
| 16 |
Correct |
3 ms |
5376 KB |
Output is correct |
| 17 |
Correct |
1 ms |
512 KB |
Output is correct |
| 18 |
Correct |
8 ms |
9984 KB |
Output is correct |
| 19 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 20 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 21 |
Correct |
6 ms |
9984 KB |
Output is correct |
| 22 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 23 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 24 |
Correct |
7 ms |
9984 KB |
Output is correct |
| 25 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 26 |
Correct |
7 ms |
9848 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
384 KB |
Output is correct |
| 2 |
Correct |
0 ms |
384 KB |
Output is correct |
| 3 |
Correct |
1 ms |
384 KB |
Output is correct |
| 4 |
Correct |
1 ms |
512 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1664 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1536 KB |
Output is correct |
| 14 |
Correct |
6 ms |
9088 KB |
Output is correct |
| 15 |
Correct |
3 ms |
5120 KB |
Output is correct |
| 16 |
Correct |
3 ms |
5376 KB |
Output is correct |
| 17 |
Correct |
1 ms |
512 KB |
Output is correct |
| 18 |
Correct |
8 ms |
9984 KB |
Output is correct |
| 19 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 20 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 21 |
Correct |
6 ms |
9984 KB |
Output is correct |
| 22 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 23 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 24 |
Correct |
7 ms |
9984 KB |
Output is correct |
| 25 |
Correct |
6 ms |
9856 KB |
Output is correct |
| 26 |
Correct |
7 ms |
9848 KB |
Output is correct |
| 27 |
Correct |
113 ms |
158456 KB |
Output is correct |
| 28 |
Correct |
15 ms |
26368 KB |
Output is correct |
| 29 |
Correct |
9 ms |
13948 KB |
Output is correct |
| 30 |
Correct |
1 ms |
896 KB |
Output is correct |
| 31 |
Correct |
91 ms |
131320 KB |
Output is correct |
| 32 |
Correct |
108 ms |
158972 KB |
Output is correct |
| 33 |
Correct |
99 ms |
158456 KB |
Output is correct |
| 34 |
Correct |
108 ms |
152316 KB |
Output is correct |
| 35 |
Correct |
99 ms |
158968 KB |
Output is correct |
| 36 |
Correct |
98 ms |
158456 KB |
Output is correct |
| 37 |
Correct |
123 ms |
158968 KB |
Output is correct |
| 38 |
Correct |
78 ms |
130808 KB |
Output is correct |
| 39 |
Correct |
81 ms |
130808 KB |
Output is correct |
