#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#define AquA cin.tie(0);ios_base::sync_with_stdio(0);
#define fs first
#define sc second
#define cd complex<double>
#define p_q priority_queue
using namespace std;
int main(){
AquA;
int n,m;
cin >> n >> m;
long long ans=0;
vector<string> v(n);
for(int i=0;i<n;i++){
cin >> v[i];
}
vector<vector<int> > p1(n,vector<int>(m)),p2(n,vector<int>(m));
for(int i=0;i<n;i++){
p1[i][m-1]=(v[i][m-1]=='O');
for(int j=m-2;j>=0;j--){
p1[i][j]=p1[i][j+1]+(v[i][j]=='O');
}
}
for(int j=0;j<m;j++){
p2[n-1][j]=(v[n-1][j]=='I');
for(int i=n-2;i>=0;i--){
p2[i][j]=p2[i+1][j]+(v[i][j]=='I');
}
}
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
if(v[i][j]=='J'){
ans+=p1[i][j]*p2[i][j];
}
}
}
cout << ans << "\n";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
308 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
324 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
332 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
308 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
324 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
332 KB |
Output is correct |
14 |
Correct |
4 ms |
2252 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
2 ms |
1484 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
4 ms |
2736 KB |
Output is correct |
19 |
Correct |
3 ms |
2636 KB |
Output is correct |
20 |
Correct |
4 ms |
2748 KB |
Output is correct |
21 |
Correct |
5 ms |
2764 KB |
Output is correct |
22 |
Correct |
4 ms |
2616 KB |
Output is correct |
23 |
Correct |
4 ms |
2756 KB |
Output is correct |
24 |
Correct |
5 ms |
2788 KB |
Output is correct |
25 |
Correct |
3 ms |
2624 KB |
Output is correct |
26 |
Correct |
4 ms |
2680 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
204 KB |
Output is correct |
2 |
Correct |
0 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
1 ms |
332 KB |
Output is correct |
6 |
Correct |
1 ms |
308 KB |
Output is correct |
7 |
Correct |
1 ms |
332 KB |
Output is correct |
8 |
Correct |
1 ms |
324 KB |
Output is correct |
9 |
Correct |
1 ms |
332 KB |
Output is correct |
10 |
Correct |
1 ms |
332 KB |
Output is correct |
11 |
Correct |
1 ms |
332 KB |
Output is correct |
12 |
Correct |
1 ms |
332 KB |
Output is correct |
13 |
Correct |
1 ms |
332 KB |
Output is correct |
14 |
Correct |
4 ms |
2252 KB |
Output is correct |
15 |
Correct |
1 ms |
332 KB |
Output is correct |
16 |
Correct |
2 ms |
1484 KB |
Output is correct |
17 |
Correct |
1 ms |
332 KB |
Output is correct |
18 |
Correct |
4 ms |
2736 KB |
Output is correct |
19 |
Correct |
3 ms |
2636 KB |
Output is correct |
20 |
Correct |
4 ms |
2748 KB |
Output is correct |
21 |
Correct |
5 ms |
2764 KB |
Output is correct |
22 |
Correct |
4 ms |
2616 KB |
Output is correct |
23 |
Correct |
4 ms |
2756 KB |
Output is correct |
24 |
Correct |
5 ms |
2788 KB |
Output is correct |
25 |
Correct |
3 ms |
2624 KB |
Output is correct |
26 |
Correct |
4 ms |
2680 KB |
Output is correct |
27 |
Correct |
208 ms |
84560 KB |
Output is correct |
28 |
Correct |
2 ms |
716 KB |
Output is correct |
29 |
Correct |
9 ms |
6720 KB |
Output is correct |
30 |
Correct |
1 ms |
460 KB |
Output is correct |
31 |
Correct |
149 ms |
62256 KB |
Output is correct |
32 |
Correct |
199 ms |
89084 KB |
Output is correct |
33 |
Correct |
189 ms |
89236 KB |
Output is correct |
34 |
Correct |
175 ms |
72380 KB |
Output is correct |
35 |
Correct |
198 ms |
88868 KB |
Output is correct |
36 |
Correct |
200 ms |
89412 KB |
Output is correct |
37 |
Correct |
229 ms |
89604 KB |
Output is correct |
38 |
Correct |
140 ms |
61776 KB |
Output is correct |
39 |
Correct |
132 ms |
61916 KB |
Output is correct |