#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
using namespace std;
template <class X, class Y> bool minimize(X &a, Y b) {
if (a > b) return a = b, true;
return false;
}
template <class X, class Y> bool maximize(X &a, Y b) {
if (a < b) return a = b, true;
return false;
}
const int N = 3e3 + 7;
char a[N][N];
int cnt[N];
signed main() {
cin.tie(0)->sync_with_stdio(0);
int n, m; cin >> n >> m;
for (int i = 1; i <= n; i ++) {
for (int j = 1; j <= m; j ++) {
cin >> a[i][j];
}
}
long long res = 0;
for (int i = n; i > 0; i --) {
int cnt_o = 0;
for (int j = m; j > 0; j --) {
if (a[i][j] == 'J') {
res += 1LL * cnt_o * cnt[j];
}
if (a[i][j] == 'O') {
cnt_o ++;
}
if (a[i][j] == 'I') {
cnt[j] ++;
}
}
}
cout << res;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
596 KB |
Output is correct |
6 |
Correct |
1 ms |
596 KB |
Output is correct |
7 |
Correct |
0 ms |
596 KB |
Output is correct |
8 |
Correct |
1 ms |
596 KB |
Output is correct |
9 |
Correct |
1 ms |
596 KB |
Output is correct |
10 |
Correct |
1 ms |
596 KB |
Output is correct |
11 |
Correct |
1 ms |
552 KB |
Output is correct |
12 |
Correct |
0 ms |
596 KB |
Output is correct |
13 |
Correct |
1 ms |
596 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
596 KB |
Output is correct |
6 |
Correct |
1 ms |
596 KB |
Output is correct |
7 |
Correct |
0 ms |
596 KB |
Output is correct |
8 |
Correct |
1 ms |
596 KB |
Output is correct |
9 |
Correct |
1 ms |
596 KB |
Output is correct |
10 |
Correct |
1 ms |
596 KB |
Output is correct |
11 |
Correct |
1 ms |
552 KB |
Output is correct |
12 |
Correct |
0 ms |
596 KB |
Output is correct |
13 |
Correct |
1 ms |
596 KB |
Output is correct |
14 |
Correct |
7 ms |
1696 KB |
Output is correct |
15 |
Correct |
1 ms |
1492 KB |
Output is correct |
16 |
Correct |
4 ms |
980 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
12 ms |
1768 KB |
Output is correct |
19 |
Correct |
7 ms |
1748 KB |
Output is correct |
20 |
Correct |
8 ms |
1676 KB |
Output is correct |
21 |
Correct |
8 ms |
2008 KB |
Output is correct |
22 |
Correct |
7 ms |
2004 KB |
Output is correct |
23 |
Correct |
7 ms |
1908 KB |
Output is correct |
24 |
Correct |
9 ms |
2004 KB |
Output is correct |
25 |
Correct |
7 ms |
2032 KB |
Output is correct |
26 |
Correct |
7 ms |
2012 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
596 KB |
Output is correct |
6 |
Correct |
1 ms |
596 KB |
Output is correct |
7 |
Correct |
0 ms |
596 KB |
Output is correct |
8 |
Correct |
1 ms |
596 KB |
Output is correct |
9 |
Correct |
1 ms |
596 KB |
Output is correct |
10 |
Correct |
1 ms |
596 KB |
Output is correct |
11 |
Correct |
1 ms |
552 KB |
Output is correct |
12 |
Correct |
0 ms |
596 KB |
Output is correct |
13 |
Correct |
1 ms |
596 KB |
Output is correct |
14 |
Correct |
7 ms |
1696 KB |
Output is correct |
15 |
Correct |
1 ms |
1492 KB |
Output is correct |
16 |
Correct |
4 ms |
980 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
12 ms |
1768 KB |
Output is correct |
19 |
Correct |
7 ms |
1748 KB |
Output is correct |
20 |
Correct |
8 ms |
1676 KB |
Output is correct |
21 |
Correct |
8 ms |
2008 KB |
Output is correct |
22 |
Correct |
7 ms |
2004 KB |
Output is correct |
23 |
Correct |
7 ms |
1908 KB |
Output is correct |
24 |
Correct |
9 ms |
2004 KB |
Output is correct |
25 |
Correct |
7 ms |
2032 KB |
Output is correct |
26 |
Correct |
7 ms |
2012 KB |
Output is correct |
27 |
Correct |
219 ms |
17380 KB |
Output is correct |
28 |
Correct |
4 ms |
7124 KB |
Output is correct |
29 |
Correct |
17 ms |
1724 KB |
Output is correct |
30 |
Correct |
1 ms |
340 KB |
Output is correct |
31 |
Correct |
192 ms |
13832 KB |
Output is correct |
32 |
Correct |
191 ms |
17888 KB |
Output is correct |
33 |
Correct |
230 ms |
17888 KB |
Output is correct |
34 |
Correct |
220 ms |
15868 KB |
Output is correct |
35 |
Correct |
197 ms |
17856 KB |
Output is correct |
36 |
Correct |
145 ms |
17828 KB |
Output is correct |
37 |
Correct |
226 ms |
17996 KB |
Output is correct |
38 |
Correct |
167 ms |
13720 KB |
Output is correct |
39 |
Correct |
106 ms |
13684 KB |
Output is correct |