#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ld long double
#define ar array
const int INF = 1e17;
const int MOD = 998244353;
int32_t main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
int n, m; cin>>n>>m;
string s[n];
for (auto &i : s) cin>>i;
int sfO[n][m], sfI[n][m];
int ans = 0;
for (int i = n-1; i >= 0; --i) {
for (int j = m-1; j >= 0; --j) {
sfO[i][j] = (j+1 < m) ? sfO[i][j+1] : 0;
sfI[i][j] = (i+1 < n) ? sfI[i+1][j] : 0;
if (s[i][j] == 'J') ans += sfO[i][j]*sfI[i][j];
if (s[i][j] == 'O') sfO[i][j] = 1 + ((j+1 < m) ? sfO[i][j+1] : 0);
if (s[i][j] == 'I') sfI[i][j] = 1 + ((i+1 < n) ? sfI[i+1][j] : 0);
}
}
cout<<ans<<"\n";
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
460 KB |
Output is correct |
| 6 |
Correct |
1 ms |
460 KB |
Output is correct |
| 7 |
Correct |
1 ms |
460 KB |
Output is correct |
| 8 |
Correct |
3 ms |
460 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
460 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 |
460 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
460 KB |
Output is correct |
| 6 |
Correct |
1 ms |
460 KB |
Output is correct |
| 7 |
Correct |
1 ms |
460 KB |
Output is correct |
| 8 |
Correct |
3 ms |
460 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
460 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 |
460 KB |
Output is correct |
| 14 |
Correct |
4 ms |
3660 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
2 ms |
2508 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
5 ms |
4684 KB |
Output is correct |
| 19 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 20 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 21 |
Correct |
5 ms |
4688 KB |
Output is correct |
| 22 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 23 |
Correct |
5 ms |
4556 KB |
Output is correct |
| 24 |
Correct |
5 ms |
4684 KB |
Output is correct |
| 25 |
Correct |
4 ms |
4544 KB |
Output is correct |
| 26 |
Correct |
4 ms |
4556 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
204 KB |
Output is correct |
| 2 |
Correct |
1 ms |
204 KB |
Output is correct |
| 3 |
Correct |
1 ms |
204 KB |
Output is correct |
| 4 |
Correct |
1 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
460 KB |
Output is correct |
| 6 |
Correct |
1 ms |
460 KB |
Output is correct |
| 7 |
Correct |
1 ms |
460 KB |
Output is correct |
| 8 |
Correct |
3 ms |
460 KB |
Output is correct |
| 9 |
Correct |
1 ms |
332 KB |
Output is correct |
| 10 |
Correct |
1 ms |
460 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 |
460 KB |
Output is correct |
| 14 |
Correct |
4 ms |
3660 KB |
Output is correct |
| 15 |
Correct |
1 ms |
332 KB |
Output is correct |
| 16 |
Correct |
2 ms |
2508 KB |
Output is correct |
| 17 |
Correct |
1 ms |
332 KB |
Output is correct |
| 18 |
Correct |
5 ms |
4684 KB |
Output is correct |
| 19 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 20 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 21 |
Correct |
5 ms |
4688 KB |
Output is correct |
| 22 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 23 |
Correct |
5 ms |
4556 KB |
Output is correct |
| 24 |
Correct |
5 ms |
4684 KB |
Output is correct |
| 25 |
Correct |
4 ms |
4544 KB |
Output is correct |
| 26 |
Correct |
4 ms |
4556 KB |
Output is correct |
| 27 |
Correct |
155 ms |
150872 KB |
Output is correct |
| 28 |
Correct |
1 ms |
716 KB |
Output is correct |
| 29 |
Correct |
9 ms |
11736 KB |
Output is correct |
| 30 |
Correct |
1 ms |
720 KB |
Output is correct |
| 31 |
Correct |
115 ms |
110916 KB |
Output is correct |
| 32 |
Correct |
106 ms |
158660 KB |
Output is correct |
| 33 |
Correct |
108 ms |
159280 KB |
Output is correct |
| 34 |
Correct |
140 ms |
128684 KB |
Output is correct |
| 35 |
Correct |
112 ms |
158672 KB |
Output is correct |
| 36 |
Correct |
105 ms |
159196 KB |
Output is correct |
| 37 |
Correct |
154 ms |
159780 KB |
Output is correct |
| 38 |
Correct |
74 ms |
110028 KB |
Output is correct |
| 39 |
Correct |
73 ms |
110572 KB |
Output is correct |
