#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main(){
ll h, w;
cin >> h >> w;
vector <string> grid;
for(ll i = 0; i < h; i++){
string s;
cin >> s;
grid.push_back(s);
}
ll O[h][w], I[h][w];
for(ll i = 0; i < h; i++){
O[i][w - 1] = (grid[i][w - 1] == 'O')?1:0;
}
for(ll i = 0; i < w; i++){
I[h - 1][i] = (grid[h - 1][i] == 'I')?1:0;
}
ll cnt = 0;
for(ll i = h - 2; i >= 0; i--){
for(ll j = w - 2; j >= 0; j--){
switch(grid[i][j]){
case 'J':
I[i][j] = I[i + 1][j];
O[i][j] = O[i][j + 1];
cnt += I[i][j] * O[i][j];
break;
case 'O':
I[i][j] = I[i + 1][j];
O[i][j] = O[i][j + 1] + 1;
break;
case 'I':
I[i][j] = I[i + 1][j] + 1;
O[i][j] = O[i][j + 1];
break;
}
}
}
cout << cnt;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
256 KB |
Output is correct |
| 2 |
Correct |
5 ms |
256 KB |
Output is correct |
| 3 |
Correct |
5 ms |
256 KB |
Output is correct |
| 4 |
Correct |
5 ms |
256 KB |
Output is correct |
| 5 |
Correct |
6 ms |
504 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
504 KB |
Output is correct |
| 8 |
Correct |
5 ms |
504 KB |
Output is correct |
| 9 |
Correct |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
504 KB |
Output is correct |
| 11 |
Correct |
5 ms |
504 KB |
Output is correct |
| 12 |
Correct |
6 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
504 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
256 KB |
Output is correct |
| 2 |
Correct |
5 ms |
256 KB |
Output is correct |
| 3 |
Correct |
5 ms |
256 KB |
Output is correct |
| 4 |
Correct |
5 ms |
256 KB |
Output is correct |
| 5 |
Correct |
6 ms |
504 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
504 KB |
Output is correct |
| 8 |
Correct |
5 ms |
504 KB |
Output is correct |
| 9 |
Correct |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
504 KB |
Output is correct |
| 11 |
Correct |
5 ms |
504 KB |
Output is correct |
| 12 |
Correct |
6 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
504 KB |
Output is correct |
| 14 |
Correct |
17 ms |
3576 KB |
Output is correct |
| 15 |
Correct |
6 ms |
376 KB |
Output is correct |
| 16 |
Correct |
12 ms |
2424 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
21 ms |
4472 KB |
Output is correct |
| 19 |
Correct |
19 ms |
4344 KB |
Output is correct |
| 20 |
Correct |
20 ms |
4344 KB |
Output is correct |
| 21 |
Correct |
21 ms |
4600 KB |
Output is correct |
| 22 |
Correct |
20 ms |
4472 KB |
Output is correct |
| 23 |
Correct |
20 ms |
4472 KB |
Output is correct |
| 24 |
Correct |
22 ms |
4600 KB |
Output is correct |
| 25 |
Correct |
19 ms |
4472 KB |
Output is correct |
| 26 |
Correct |
19 ms |
4600 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
256 KB |
Output is correct |
| 2 |
Correct |
5 ms |
256 KB |
Output is correct |
| 3 |
Correct |
5 ms |
256 KB |
Output is correct |
| 4 |
Correct |
5 ms |
256 KB |
Output is correct |
| 5 |
Correct |
6 ms |
504 KB |
Output is correct |
| 6 |
Correct |
5 ms |
376 KB |
Output is correct |
| 7 |
Correct |
5 ms |
504 KB |
Output is correct |
| 8 |
Correct |
5 ms |
504 KB |
Output is correct |
| 9 |
Correct |
5 ms |
376 KB |
Output is correct |
| 10 |
Correct |
5 ms |
504 KB |
Output is correct |
| 11 |
Correct |
5 ms |
504 KB |
Output is correct |
| 12 |
Correct |
6 ms |
376 KB |
Output is correct |
| 13 |
Correct |
5 ms |
504 KB |
Output is correct |
| 14 |
Correct |
17 ms |
3576 KB |
Output is correct |
| 15 |
Correct |
6 ms |
376 KB |
Output is correct |
| 16 |
Correct |
12 ms |
2424 KB |
Output is correct |
| 17 |
Correct |
5 ms |
376 KB |
Output is correct |
| 18 |
Correct |
21 ms |
4472 KB |
Output is correct |
| 19 |
Correct |
19 ms |
4344 KB |
Output is correct |
| 20 |
Correct |
20 ms |
4344 KB |
Output is correct |
| 21 |
Correct |
21 ms |
4600 KB |
Output is correct |
| 22 |
Correct |
20 ms |
4472 KB |
Output is correct |
| 23 |
Correct |
20 ms |
4472 KB |
Output is correct |
| 24 |
Correct |
22 ms |
4600 KB |
Output is correct |
| 25 |
Correct |
19 ms |
4472 KB |
Output is correct |
| 26 |
Correct |
19 ms |
4600 KB |
Output is correct |
| 27 |
Correct |
544 ms |
142072 KB |
Output is correct |
| 28 |
Correct |
7 ms |
1016 KB |
Output is correct |
| 29 |
Correct |
42 ms |
11256 KB |
Output is correct |
| 30 |
Correct |
7 ms |
632 KB |
Output is correct |
| 31 |
Correct |
398 ms |
104568 KB |
Output is correct |
| 32 |
Correct |
524 ms |
149368 KB |
Output is correct |
| 33 |
Correct |
526 ms |
150008 KB |
Output is correct |
| 34 |
Correct |
487 ms |
121368 KB |
Output is correct |
| 35 |
Correct |
524 ms |
149368 KB |
Output is correct |
| 36 |
Correct |
529 ms |
150136 KB |
Output is correct |
| 37 |
Correct |
572 ms |
150396 KB |
Output is correct |
| 38 |
Correct |
367 ms |
103800 KB |
Output is correct |
| 39 |
Correct |
371 ms |
104184 KB |
Output is correct |
