#include <iostream>
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll maxn = 2*1e5+5, INF = 4e18+9;
void solve(){
int n, m;
cin >> n >> m;
vector<string> s(n+1);
for(int i = 1; i <= n; i++){
cin >> s[i];
s[i] = ' ' + s[i];
}
vector<vector<ll>> orb(n+2, vector<ll>(m+2, 0)), ingot(n+2, vector<ll>(m+2, 0));
for(int i = 1; i <= n; i++){
for(int j = m; j >= 1; j--){
orb[i][j] = orb[i][j+1];
if(s[i][j] == 'O') orb[i][j]++;
}
}
for(int j = 1; j <= m; j++){
for(int i = n; i >= 1; i--){
ingot[i][j] = ingot[i+1][j];
if(s[i][j] == 'I') ingot[i][j]++;
}
}
ll ans = 0;
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
if(s[i][j] == 'J'){
ans += orb[i][j+1]*ingot[i+1][j];
}
}
}
cout << ans;
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
solve();
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
604 KB |
Output is correct |
6 |
Correct |
1 ms |
604 KB |
Output is correct |
7 |
Correct |
1 ms |
604 KB |
Output is correct |
8 |
Correct |
1 ms |
604 KB |
Output is correct |
9 |
Correct |
0 ms |
604 KB |
Output is correct |
10 |
Correct |
0 ms |
604 KB |
Output is correct |
11 |
Correct |
0 ms |
604 KB |
Output is correct |
12 |
Correct |
0 ms |
604 KB |
Output is correct |
13 |
Correct |
0 ms |
604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
604 KB |
Output is correct |
6 |
Correct |
1 ms |
604 KB |
Output is correct |
7 |
Correct |
1 ms |
604 KB |
Output is correct |
8 |
Correct |
1 ms |
604 KB |
Output is correct |
9 |
Correct |
0 ms |
604 KB |
Output is correct |
10 |
Correct |
0 ms |
604 KB |
Output is correct |
11 |
Correct |
0 ms |
604 KB |
Output is correct |
12 |
Correct |
0 ms |
604 KB |
Output is correct |
13 |
Correct |
0 ms |
604 KB |
Output is correct |
14 |
Correct |
4 ms |
3676 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
2 ms |
2652 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
5 ms |
4956 KB |
Output is correct |
19 |
Correct |
3 ms |
4700 KB |
Output is correct |
20 |
Correct |
4 ms |
4824 KB |
Output is correct |
21 |
Correct |
5 ms |
4956 KB |
Output is correct |
22 |
Correct |
4 ms |
4700 KB |
Output is correct |
23 |
Correct |
3 ms |
4700 KB |
Output is correct |
24 |
Correct |
5 ms |
4980 KB |
Output is correct |
25 |
Correct |
3 ms |
4696 KB |
Output is correct |
26 |
Correct |
4 ms |
4700 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
604 KB |
Output is correct |
6 |
Correct |
1 ms |
604 KB |
Output is correct |
7 |
Correct |
1 ms |
604 KB |
Output is correct |
8 |
Correct |
1 ms |
604 KB |
Output is correct |
9 |
Correct |
0 ms |
604 KB |
Output is correct |
10 |
Correct |
0 ms |
604 KB |
Output is correct |
11 |
Correct |
0 ms |
604 KB |
Output is correct |
12 |
Correct |
0 ms |
604 KB |
Output is correct |
13 |
Correct |
0 ms |
604 KB |
Output is correct |
14 |
Correct |
4 ms |
3676 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
2 ms |
2652 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
5 ms |
4956 KB |
Output is correct |
19 |
Correct |
3 ms |
4700 KB |
Output is correct |
20 |
Correct |
4 ms |
4824 KB |
Output is correct |
21 |
Correct |
5 ms |
4956 KB |
Output is correct |
22 |
Correct |
4 ms |
4700 KB |
Output is correct |
23 |
Correct |
3 ms |
4700 KB |
Output is correct |
24 |
Correct |
5 ms |
4980 KB |
Output is correct |
25 |
Correct |
3 ms |
4696 KB |
Output is correct |
26 |
Correct |
4 ms |
4700 KB |
Output is correct |
27 |
Correct |
174 ms |
150520 KB |
Output is correct |
28 |
Correct |
1 ms |
1112 KB |
Output is correct |
29 |
Correct |
8 ms |
11868 KB |
Output is correct |
30 |
Correct |
1 ms |
860 KB |
Output is correct |
31 |
Correct |
125 ms |
110916 KB |
Output is correct |
32 |
Correct |
142 ms |
158340 KB |
Output is correct |
33 |
Correct |
145 ms |
159044 KB |
Output is correct |
34 |
Correct |
156 ms |
128592 KB |
Output is correct |
35 |
Correct |
160 ms |
158292 KB |
Output is correct |
36 |
Correct |
154 ms |
158800 KB |
Output is correct |
37 |
Correct |
198 ms |
159344 KB |
Output is correct |
38 |
Correct |
107 ms |
109980 KB |
Output is correct |
39 |
Correct |
94 ms |
110416 KB |
Output is correct |