#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define F first
#define S second
const int maxn = 3e3+10;
const int mod = 1e9+7;
int n, m;
int R[maxn][maxn], D[maxn][maxn];
char a[maxn][maxn];
int main()
{
ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cin>> n >> m;
for(int i = 1; i <= n; i++)
for(int j = 1; j <= m; j++)
cin>> a[i][j];
ll ans = 0;
for(int i = n; i >= 1; i--)
for(int j = m; j >= 1; j--){
R[i][j] = R[i][j+1] + (a[i][j] == 'O');
D[i][j] = D[i+1][j] + (a[i][j] == 'I');
if(a[i][j] == 'J')
ans += D[i][j] * R[i][j];
}
cout<< ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
348 KB |
Output is correct |
4 |
Correct |
2 ms |
504 KB |
Output is correct |
5 |
Correct |
3 ms |
1528 KB |
Output is correct |
6 |
Correct |
3 ms |
1528 KB |
Output is correct |
7 |
Correct |
3 ms |
1400 KB |
Output is correct |
8 |
Correct |
4 ms |
1528 KB |
Output is correct |
9 |
Correct |
3 ms |
1528 KB |
Output is correct |
10 |
Correct |
3 ms |
1400 KB |
Output is correct |
11 |
Correct |
3 ms |
1528 KB |
Output is correct |
12 |
Correct |
3 ms |
1532 KB |
Output is correct |
13 |
Correct |
4 ms |
1400 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
348 KB |
Output is correct |
4 |
Correct |
2 ms |
504 KB |
Output is correct |
5 |
Correct |
3 ms |
1528 KB |
Output is correct |
6 |
Correct |
3 ms |
1528 KB |
Output is correct |
7 |
Correct |
3 ms |
1400 KB |
Output is correct |
8 |
Correct |
4 ms |
1528 KB |
Output is correct |
9 |
Correct |
3 ms |
1528 KB |
Output is correct |
10 |
Correct |
3 ms |
1400 KB |
Output is correct |
11 |
Correct |
3 ms |
1528 KB |
Output is correct |
12 |
Correct |
3 ms |
1532 KB |
Output is correct |
13 |
Correct |
4 ms |
1400 KB |
Output is correct |
14 |
Correct |
13 ms |
7544 KB |
Output is correct |
15 |
Correct |
7 ms |
5112 KB |
Output is correct |
16 |
Correct |
8 ms |
4348 KB |
Output is correct |
17 |
Correct |
2 ms |
504 KB |
Output is correct |
18 |
Correct |
14 ms |
8056 KB |
Output is correct |
19 |
Correct |
13 ms |
7928 KB |
Output is correct |
20 |
Correct |
14 ms |
7928 KB |
Output is correct |
21 |
Correct |
15 ms |
8056 KB |
Output is correct |
22 |
Correct |
14 ms |
7928 KB |
Output is correct |
23 |
Correct |
13 ms |
7928 KB |
Output is correct |
24 |
Correct |
15 ms |
8056 KB |
Output is correct |
25 |
Correct |
13 ms |
7928 KB |
Output is correct |
26 |
Correct |
13 ms |
7928 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
376 KB |
Output is correct |
2 |
Correct |
2 ms |
376 KB |
Output is correct |
3 |
Correct |
2 ms |
348 KB |
Output is correct |
4 |
Correct |
2 ms |
504 KB |
Output is correct |
5 |
Correct |
3 ms |
1528 KB |
Output is correct |
6 |
Correct |
3 ms |
1528 KB |
Output is correct |
7 |
Correct |
3 ms |
1400 KB |
Output is correct |
8 |
Correct |
4 ms |
1528 KB |
Output is correct |
9 |
Correct |
3 ms |
1528 KB |
Output is correct |
10 |
Correct |
3 ms |
1400 KB |
Output is correct |
11 |
Correct |
3 ms |
1528 KB |
Output is correct |
12 |
Correct |
3 ms |
1532 KB |
Output is correct |
13 |
Correct |
4 ms |
1400 KB |
Output is correct |
14 |
Correct |
13 ms |
7544 KB |
Output is correct |
15 |
Correct |
7 ms |
5112 KB |
Output is correct |
16 |
Correct |
8 ms |
4348 KB |
Output is correct |
17 |
Correct |
2 ms |
504 KB |
Output is correct |
18 |
Correct |
14 ms |
8056 KB |
Output is correct |
19 |
Correct |
13 ms |
7928 KB |
Output is correct |
20 |
Correct |
14 ms |
7928 KB |
Output is correct |
21 |
Correct |
15 ms |
8056 KB |
Output is correct |
22 |
Correct |
14 ms |
7928 KB |
Output is correct |
23 |
Correct |
13 ms |
7928 KB |
Output is correct |
24 |
Correct |
15 ms |
8056 KB |
Output is correct |
25 |
Correct |
13 ms |
7928 KB |
Output is correct |
26 |
Correct |
13 ms |
7928 KB |
Output is correct |
27 |
Correct |
234 ms |
82956 KB |
Output is correct |
28 |
Correct |
29 ms |
26104 KB |
Output is correct |
29 |
Correct |
19 ms |
7928 KB |
Output is correct |
30 |
Correct |
3 ms |
632 KB |
Output is correct |
31 |
Correct |
176 ms |
69640 KB |
Output is correct |
32 |
Correct |
216 ms |
83012 KB |
Output is correct |
33 |
Correct |
216 ms |
82592 KB |
Output is correct |
34 |
Correct |
204 ms |
80220 KB |
Output is correct |
35 |
Correct |
216 ms |
82812 KB |
Output is correct |
36 |
Correct |
216 ms |
82680 KB |
Output is correct |
37 |
Correct |
249 ms |
83064 KB |
Output is correct |
38 |
Correct |
160 ms |
69624 KB |
Output is correct |
39 |
Correct |
160 ms |
69420 KB |
Output is correct |