#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define ve vector
#define all(x) x.begin(), x.end()
using namespace std;
typedef pair<ll, ll> pll;
typedef pair<int, int> pii;
#pragma GCC optimize("O3")
signed main(){
int n, m;
cin >> n >> m;
ve<string> v(n);
for(auto& i : v)
cin >> i;
/* for(auto i : v) */
/* cout << i << endl; */
ve<ve<int> > os(n, ve<int>(m, 0)), is(n, ve<int>(m, 0));
for(int i = 0; i < n; i++){
os[i][m - 1] = v[i][m - 1] == 'O';
for(int j = m - 2; j >= 0; j--)
os[i][j] = os[i][j + 1] + int(v[i][j] == 'O');
}
for(int j = 0; j < m; j++){
is[n - 1][j] = v[n - 1][j] == 'I';
for(int i = n - 2; i >= 0; i--)
is[i][j] = is[i + 1][j] + int(v[i][j] == 'I');
}
ll res = 0;
for(int i = 0; i < n; i++)
for(int j = 0; j < m; j++)
if(v[i][j] == 'J')
res += os[i][j]*is[i][j];
cout << res;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
416 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
416 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
5 ms |
2136 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
4 ms |
1788 KB |
Output is correct |
17 |
Correct |
1 ms |
604 KB |
Output is correct |
18 |
Correct |
7 ms |
3004 KB |
Output is correct |
19 |
Correct |
6 ms |
2652 KB |
Output is correct |
20 |
Correct |
6 ms |
2940 KB |
Output is correct |
21 |
Correct |
8 ms |
3164 KB |
Output is correct |
22 |
Correct |
6 ms |
2652 KB |
Output is correct |
23 |
Correct |
6 ms |
2908 KB |
Output is correct |
24 |
Correct |
7 ms |
3164 KB |
Output is correct |
25 |
Correct |
8 ms |
2752 KB |
Output is correct |
26 |
Correct |
9 ms |
2908 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
344 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
416 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
344 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
5 ms |
2136 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
4 ms |
1788 KB |
Output is correct |
17 |
Correct |
1 ms |
604 KB |
Output is correct |
18 |
Correct |
7 ms |
3004 KB |
Output is correct |
19 |
Correct |
6 ms |
2652 KB |
Output is correct |
20 |
Correct |
6 ms |
2940 KB |
Output is correct |
21 |
Correct |
8 ms |
3164 KB |
Output is correct |
22 |
Correct |
6 ms |
2652 KB |
Output is correct |
23 |
Correct |
6 ms |
2908 KB |
Output is correct |
24 |
Correct |
7 ms |
3164 KB |
Output is correct |
25 |
Correct |
8 ms |
2752 KB |
Output is correct |
26 |
Correct |
9 ms |
2908 KB |
Output is correct |
27 |
Correct |
343 ms |
86688 KB |
Output is correct |
28 |
Correct |
2 ms |
860 KB |
Output is correct |
29 |
Correct |
16 ms |
7108 KB |
Output is correct |
30 |
Correct |
1 ms |
604 KB |
Output is correct |
31 |
Correct |
258 ms |
65288 KB |
Output is correct |
32 |
Correct |
345 ms |
90664 KB |
Output is correct |
33 |
Correct |
316 ms |
91016 KB |
Output is correct |
34 |
Correct |
276 ms |
75516 KB |
Output is correct |
35 |
Correct |
363 ms |
90708 KB |
Output is correct |
36 |
Correct |
392 ms |
90964 KB |
Output is correct |
37 |
Correct |
337 ms |
91216 KB |
Output is correct |
38 |
Correct |
207 ms |
64528 KB |
Output is correct |
39 |
Correct |
213 ms |
64900 KB |
Output is correct |