// https://noic.com.br/materiais-informatica/problemas-da-semana/intermediario-semana36/ > página 13
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
int main() {
ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
int h, w; cin >> h >> w;
vector<vector<char>> grid (h, vector<char> (w));
vector<vector<int>> pfI (h, vector<int> (w));
vector<vector<int>> pfO (h, vector<int> (w));
for (int i=0; i<h; i++) {
string l; cin >> l;
for (int j=0; j<w; j++) grid[i][j] = l[j];
}
for (int i=0; i<h; i++) {
int cnt = 0;
for (int j=w-1; j>=0; j--) {
if (grid[i][j] == 'O') cnt++;
pfO[i][j] = cnt;
}
}
for (int j=0; j<w; j++) {
int cnt = 0;
for (int i=h-1; i>=0; i--) {
if (grid[i][j] == 'I') cnt++;
pfI[i][j] = cnt;
}
}
ll ans = 0;
for (int i=0; i<h; i++) {
for (int j=0; j<w; j++) {
if (grid[i][j] == 'J') {
ans += pfO[i][j] * pfI[i][j];
}
}
}
cout << ans << endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
328 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
328 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
5 ms |
2180 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
3 ms |
1620 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
5 ms |
2772 KB |
Output is correct |
19 |
Correct |
4 ms |
2644 KB |
Output is correct |
20 |
Correct |
4 ms |
2772 KB |
Output is correct |
21 |
Correct |
5 ms |
2840 KB |
Output is correct |
22 |
Correct |
4 ms |
2632 KB |
Output is correct |
23 |
Correct |
4 ms |
2760 KB |
Output is correct |
24 |
Correct |
5 ms |
2772 KB |
Output is correct |
25 |
Correct |
4 ms |
2644 KB |
Output is correct |
26 |
Correct |
4 ms |
2772 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
1 ms |
340 KB |
Output is correct |
8 |
Correct |
1 ms |
340 KB |
Output is correct |
9 |
Correct |
1 ms |
340 KB |
Output is correct |
10 |
Correct |
1 ms |
328 KB |
Output is correct |
11 |
Correct |
1 ms |
340 KB |
Output is correct |
12 |
Correct |
1 ms |
340 KB |
Output is correct |
13 |
Correct |
1 ms |
340 KB |
Output is correct |
14 |
Correct |
5 ms |
2180 KB |
Output is correct |
15 |
Correct |
1 ms |
340 KB |
Output is correct |
16 |
Correct |
3 ms |
1620 KB |
Output is correct |
17 |
Correct |
1 ms |
340 KB |
Output is correct |
18 |
Correct |
5 ms |
2772 KB |
Output is correct |
19 |
Correct |
4 ms |
2644 KB |
Output is correct |
20 |
Correct |
4 ms |
2772 KB |
Output is correct |
21 |
Correct |
5 ms |
2840 KB |
Output is correct |
22 |
Correct |
4 ms |
2632 KB |
Output is correct |
23 |
Correct |
4 ms |
2760 KB |
Output is correct |
24 |
Correct |
5 ms |
2772 KB |
Output is correct |
25 |
Correct |
4 ms |
2644 KB |
Output is correct |
26 |
Correct |
4 ms |
2772 KB |
Output is correct |
27 |
Correct |
243 ms |
83776 KB |
Output is correct |
28 |
Correct |
1 ms |
852 KB |
Output is correct |
29 |
Correct |
10 ms |
6612 KB |
Output is correct |
30 |
Correct |
1 ms |
468 KB |
Output is correct |
31 |
Correct |
170 ms |
61772 KB |
Output is correct |
32 |
Correct |
223 ms |
88104 KB |
Output is correct |
33 |
Correct |
217 ms |
88392 KB |
Output is correct |
34 |
Correct |
193 ms |
71540 KB |
Output is correct |
35 |
Correct |
223 ms |
88152 KB |
Output is correct |
36 |
Correct |
216 ms |
88432 KB |
Output is correct |
37 |
Correct |
256 ms |
88724 KB |
Output is correct |
38 |
Correct |
156 ms |
61292 KB |
Output is correct |
39 |
Correct |
146 ms |
61440 KB |
Output is correct |