// author: Halit
#include <bits/stdc++.h>
int main() {
int n, m;
std::cin >> n >> m;
std::vector<std::vector<char>> a(n, std::vector<char>(m));
std::vector<std::vector<int64_t>> count_orbs(n+1, std::vector<int64_t>(m+1));
std::vector<std::vector<int64_t>> count_ingots(n+1, std::vector<int64_t>(m+1));
for (int i = 0;i < n; ++i) {
for (int j = 0;j < m; ++j) {
std::cin >> a[i][j];
count_orbs[i][j] += (a[i][j] == 'O');
count_ingots[i][j] += (a[i][j] == 'I');
}
}
for (int i = 0;i < n; ++i) for (int j = m-1;j >= 0; --j) count_orbs[i][j] += count_orbs[i][j+1];
for (int i = n-1;i >= 0; --i) for (int j = 0;j < m; ++j) count_ingots[i][j] += count_ingots[i+1][j];
int64_t ans = 0;
for (int i = 0;i < n; ++i) {
for (int j = 0;j < m; ++j) {
ans += (a[i][j] == 'J') * (count_orbs[i][j+1]) * (count_ingots[i+1][j]);
}
}
std::cout << ans;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
2 ms |
460 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
452 KB |
Output is correct |
| 8 |
Correct |
1 ms |
460 KB |
Output is correct |
| 9 |
Correct |
1 ms |
360 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
460 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
2 ms |
460 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
452 KB |
Output is correct |
| 8 |
Correct |
1 ms |
460 KB |
Output is correct |
| 9 |
Correct |
1 ms |
360 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
460 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
18 ms |
3548 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
11 ms |
2488 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
21 ms |
4520 KB |
Output is correct |
| 19 |
Correct |
21 ms |
4352 KB |
Output is correct |
| 20 |
Correct |
21 ms |
4436 KB |
Output is correct |
| 21 |
Correct |
22 ms |
4428 KB |
Output is correct |
| 22 |
Correct |
20 ms |
4300 KB |
Output is correct |
| 23 |
Correct |
24 ms |
4428 KB |
Output is correct |
| 24 |
Correct |
21 ms |
4512 KB |
Output is correct |
| 25 |
Correct |
22 ms |
4428 KB |
Output is correct |
| 26 |
Correct |
22 ms |
4428 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
2 ms |
460 KB |
Output is correct |
| 6 |
Correct |
1 ms |
332 KB |
Output is correct |
| 7 |
Correct |
1 ms |
452 KB |
Output is correct |
| 8 |
Correct |
1 ms |
460 KB |
Output is correct |
| 9 |
Correct |
1 ms |
360 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
460 KB |
Output is correct |
| 12 |
Correct |
1 ms |
332 KB |
Output is correct |
| 13 |
Correct |
1 ms |
332 KB |
Output is correct |
| 14 |
Correct |
18 ms |
3548 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
11 ms |
2488 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
21 ms |
4520 KB |
Output is correct |
| 19 |
Correct |
21 ms |
4352 KB |
Output is correct |
| 20 |
Correct |
21 ms |
4436 KB |
Output is correct |
| 21 |
Correct |
22 ms |
4428 KB |
Output is correct |
| 22 |
Correct |
20 ms |
4300 KB |
Output is correct |
| 23 |
Correct |
24 ms |
4428 KB |
Output is correct |
| 24 |
Correct |
21 ms |
4512 KB |
Output is correct |
| 25 |
Correct |
22 ms |
4428 KB |
Output is correct |
| 26 |
Correct |
22 ms |
4428 KB |
Output is correct |
| 27 |
Correct |
696 ms |
142100 KB |
Output is correct |
| 28 |
Correct |
3 ms |
972 KB |
Output is correct |
| 29 |
Correct |
54 ms |
11084 KB |
Output is correct |
| 30 |
Correct |
2 ms |
716 KB |
Output is correct |
| 31 |
Correct |
509 ms |
104572 KB |
Output is correct |
| 32 |
Correct |
752 ms |
149388 KB |
Output is correct |
| 33 |
Correct |
772 ms |
149828 KB |
Output is correct |
| 34 |
Correct |
594 ms |
121260 KB |
Output is correct |
| 35 |
Correct |
721 ms |
149292 KB |
Output is correct |
| 36 |
Correct |
729 ms |
149876 KB |
Output is correct |
| 37 |
Correct |
763 ms |
150340 KB |
Output is correct |
| 38 |
Correct |
513 ms |
103748 KB |
Output is correct |
| 39 |
Correct |
515 ms |
104260 KB |
Output is correct |
