// Success consists of going from failure to failure without loss of enthusiasm
#include <bits/stdc++.h>
using namespace std;
#define nl '\n'
template<class T> using V = vector<T>;
using str = string;
using ll = long long;
int main() {
cin.tie(0)->sync_with_stdio(0);
int N, M; cin >> N >> M;
V<str> A(N); for(auto& x : A) cin >> x;
V<V<int>> I(N, V<int>(M, 0)), O(N, V<int>(M, 0));
ll ans = 0;
for(int i = N - 1; i >= 0; i--) for(int j = M - 1; j >= 0; j--) {
I[i][j] = (A[i][j] == 'I');
if (i+1 < N) I[i][j] += I[i+1][j];
O[i][j] = (A[i][j] == 'O');
if (j+1 < M) O[i][j] += O[i][j+1];
if (A[i][j] == 'J') ans += O[i][j] * 1LL * I[i][j];
}
cout << ans << nl;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
340 KB |
Output is correct |
| 7 |
Correct |
0 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
0 ms |
340 KB |
Output is correct |
| 12 |
Correct |
0 ms |
340 KB |
Output is correct |
| 13 |
Correct |
0 ms |
340 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
340 KB |
Output is correct |
| 7 |
Correct |
0 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
0 ms |
340 KB |
Output is correct |
| 12 |
Correct |
0 ms |
340 KB |
Output is correct |
| 13 |
Correct |
0 ms |
340 KB |
Output is correct |
| 14 |
Correct |
2 ms |
2004 KB |
Output is correct |
| 15 |
Correct |
0 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1492 KB |
Output is correct |
| 17 |
Correct |
0 ms |
340 KB |
Output is correct |
| 18 |
Correct |
2 ms |
2516 KB |
Output is correct |
| 19 |
Correct |
2 ms |
2388 KB |
Output is correct |
| 20 |
Correct |
2 ms |
2516 KB |
Output is correct |
| 21 |
Correct |
2 ms |
2516 KB |
Output is correct |
| 22 |
Correct |
2 ms |
2388 KB |
Output is correct |
| 23 |
Correct |
2 ms |
2516 KB |
Output is correct |
| 24 |
Correct |
3 ms |
2516 KB |
Output is correct |
| 25 |
Correct |
3 ms |
2388 KB |
Output is correct |
| 26 |
Correct |
2 ms |
2516 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
0 ms |
212 KB |
Output is correct |
| 4 |
Correct |
0 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
340 KB |
Output is correct |
| 7 |
Correct |
0 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
0 ms |
340 KB |
Output is correct |
| 12 |
Correct |
0 ms |
340 KB |
Output is correct |
| 13 |
Correct |
0 ms |
340 KB |
Output is correct |
| 14 |
Correct |
2 ms |
2004 KB |
Output is correct |
| 15 |
Correct |
0 ms |
340 KB |
Output is correct |
| 16 |
Correct |
1 ms |
1492 KB |
Output is correct |
| 17 |
Correct |
0 ms |
340 KB |
Output is correct |
| 18 |
Correct |
2 ms |
2516 KB |
Output is correct |
| 19 |
Correct |
2 ms |
2388 KB |
Output is correct |
| 20 |
Correct |
2 ms |
2516 KB |
Output is correct |
| 21 |
Correct |
2 ms |
2516 KB |
Output is correct |
| 22 |
Correct |
2 ms |
2388 KB |
Output is correct |
| 23 |
Correct |
2 ms |
2516 KB |
Output is correct |
| 24 |
Correct |
3 ms |
2516 KB |
Output is correct |
| 25 |
Correct |
3 ms |
2388 KB |
Output is correct |
| 26 |
Correct |
2 ms |
2516 KB |
Output is correct |
| 27 |
Correct |
73 ms |
76228 KB |
Output is correct |
| 28 |
Correct |
1 ms |
724 KB |
Output is correct |
| 29 |
Correct |
5 ms |
6100 KB |
Output is correct |
| 30 |
Correct |
1 ms |
468 KB |
Output is correct |
| 31 |
Correct |
54 ms |
56112 KB |
Output is correct |
| 32 |
Correct |
59 ms |
80212 KB |
Output is correct |
| 33 |
Correct |
59 ms |
80540 KB |
Output is correct |
| 34 |
Correct |
63 ms |
65092 KB |
Output is correct |
| 35 |
Correct |
64 ms |
80252 KB |
Output is correct |
| 36 |
Correct |
59 ms |
80468 KB |
Output is correct |
| 37 |
Correct |
82 ms |
80740 KB |
Output is correct |
| 38 |
Correct |
42 ms |
55716 KB |
Output is correct |
| 39 |
Correct |
43 ms |
55900 KB |
Output is correct |
