#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
int ans;
int h, w;
string ar[3005];
int suff[3005][3005][2];
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin >> h >> w;
for (int i = 0; i < h; i++) {
cin >> ar[i];
}
for (int i = 0; i < h; i++) {
for (int j = w - 1; j >= 0; j--) {
suff[i][j][0] = suff[i][j + 1][0];
suff[i][j][0] += (ar[i][j] == 'O');
}
}
for (int i = h - 1; i >= 0; i--) {
for (int j = 0; j < w; j++) {
suff[i][j][1] = suff[i + 1][j][1];
suff[i][j][1] += (ar[i][j] == 'I');
}
}
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
if (ar[i][j] == 'J') {
ans += suff[i][j][0] * suff[i][j][1];
}
}
}
cout << ans << '\n';
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
2 ms |
940 KB |
Output is correct |
6 |
Correct |
2 ms |
844 KB |
Output is correct |
7 |
Correct |
1 ms |
844 KB |
Output is correct |
8 |
Correct |
2 ms |
940 KB |
Output is correct |
9 |
Correct |
1 ms |
844 KB |
Output is correct |
10 |
Correct |
1 ms |
844 KB |
Output is correct |
11 |
Correct |
1 ms |
944 KB |
Output is correct |
12 |
Correct |
1 ms |
844 KB |
Output is correct |
13 |
Correct |
1 ms |
844 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
2 ms |
940 KB |
Output is correct |
6 |
Correct |
2 ms |
844 KB |
Output is correct |
7 |
Correct |
1 ms |
844 KB |
Output is correct |
8 |
Correct |
2 ms |
940 KB |
Output is correct |
9 |
Correct |
1 ms |
844 KB |
Output is correct |
10 |
Correct |
1 ms |
844 KB |
Output is correct |
11 |
Correct |
1 ms |
944 KB |
Output is correct |
12 |
Correct |
1 ms |
844 KB |
Output is correct |
13 |
Correct |
1 ms |
844 KB |
Output is correct |
14 |
Correct |
8 ms |
5804 KB |
Output is correct |
15 |
Correct |
3 ms |
2124 KB |
Output is correct |
16 |
Correct |
4 ms |
3760 KB |
Output is correct |
17 |
Correct |
1 ms |
416 KB |
Output is correct |
18 |
Correct |
9 ms |
6868 KB |
Output is correct |
19 |
Correct |
9 ms |
6672 KB |
Output is correct |
20 |
Correct |
7 ms |
6604 KB |
Output is correct |
21 |
Correct |
10 ms |
6860 KB |
Output is correct |
22 |
Correct |
7 ms |
6604 KB |
Output is correct |
23 |
Correct |
6 ms |
6692 KB |
Output is correct |
24 |
Correct |
9 ms |
6864 KB |
Output is correct |
25 |
Correct |
7 ms |
6604 KB |
Output is correct |
26 |
Correct |
6 ms |
6620 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
332 KB |
Output is correct |
2 |
Correct |
1 ms |
332 KB |
Output is correct |
3 |
Correct |
1 ms |
332 KB |
Output is correct |
4 |
Correct |
1 ms |
332 KB |
Output is correct |
5 |
Correct |
2 ms |
940 KB |
Output is correct |
6 |
Correct |
2 ms |
844 KB |
Output is correct |
7 |
Correct |
1 ms |
844 KB |
Output is correct |
8 |
Correct |
2 ms |
940 KB |
Output is correct |
9 |
Correct |
1 ms |
844 KB |
Output is correct |
10 |
Correct |
1 ms |
844 KB |
Output is correct |
11 |
Correct |
1 ms |
944 KB |
Output is correct |
12 |
Correct |
1 ms |
844 KB |
Output is correct |
13 |
Correct |
1 ms |
844 KB |
Output is correct |
14 |
Correct |
8 ms |
5804 KB |
Output is correct |
15 |
Correct |
3 ms |
2124 KB |
Output is correct |
16 |
Correct |
4 ms |
3760 KB |
Output is correct |
17 |
Correct |
1 ms |
416 KB |
Output is correct |
18 |
Correct |
9 ms |
6868 KB |
Output is correct |
19 |
Correct |
9 ms |
6672 KB |
Output is correct |
20 |
Correct |
7 ms |
6604 KB |
Output is correct |
21 |
Correct |
10 ms |
6860 KB |
Output is correct |
22 |
Correct |
7 ms |
6604 KB |
Output is correct |
23 |
Correct |
6 ms |
6692 KB |
Output is correct |
24 |
Correct |
9 ms |
6864 KB |
Output is correct |
25 |
Correct |
7 ms |
6604 KB |
Output is correct |
26 |
Correct |
6 ms |
6620 KB |
Output is correct |
27 |
Correct |
188 ms |
158940 KB |
Output is correct |
28 |
Correct |
9 ms |
10276 KB |
Output is correct |
29 |
Correct |
12 ms |
12820 KB |
Output is correct |
30 |
Correct |
2 ms |
844 KB |
Output is correct |
31 |
Correct |
131 ms |
121012 KB |
Output is correct |
32 |
Correct |
160 ms |
159912 KB |
Output is correct |
33 |
Correct |
170 ms |
159540 KB |
Output is correct |
34 |
Correct |
162 ms |
140296 KB |
Output is correct |
35 |
Correct |
165 ms |
159936 KB |
Output is correct |
36 |
Correct |
163 ms |
159468 KB |
Output is correct |
37 |
Correct |
199 ms |
160068 KB |
Output is correct |
38 |
Correct |
122 ms |
120148 KB |
Output is correct |
39 |
Correct |
107 ms |
120516 KB |
Output is correct |