#include<bits/stdc++.h>
#define ll long long
using namespace std;
int x,y,n,m,i,j,dp1[3005][3005],dp2[3005][3005];
ll ans;
char s[3005][3005];
int main(){
cin >> n >> m;
for(i=1;i<=n;i++){
for(j=1;j<=m;j++){
cin >> s[i][j];
}
}
for(i=n;i>0;i--){
for(j=m;j>0;j--){
dp1[i][j]=dp1[i][j+1];
dp2[i][j]=dp2[i+1][j];
if(s[i][j]=='J') ans+=dp1[i][j]*dp2[i][j];
if(s[i][j]=='O') dp1[i][j]++;
if(s[i][j]=='I') dp2[i][j]++;
}
}
cout << ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 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 |
1628 KB |
Output is correct |
6 |
Correct |
1 ms |
1628 KB |
Output is correct |
7 |
Correct |
1 ms |
1372 KB |
Output is correct |
8 |
Correct |
1 ms |
1628 KB |
Output is correct |
9 |
Correct |
1 ms |
1628 KB |
Output is correct |
10 |
Correct |
1 ms |
1432 KB |
Output is correct |
11 |
Correct |
1 ms |
1480 KB |
Output is correct |
12 |
Correct |
1 ms |
1624 KB |
Output is correct |
13 |
Correct |
1 ms |
1480 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 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 |
1628 KB |
Output is correct |
6 |
Correct |
1 ms |
1628 KB |
Output is correct |
7 |
Correct |
1 ms |
1372 KB |
Output is correct |
8 |
Correct |
1 ms |
1628 KB |
Output is correct |
9 |
Correct |
1 ms |
1628 KB |
Output is correct |
10 |
Correct |
1 ms |
1432 KB |
Output is correct |
11 |
Correct |
1 ms |
1480 KB |
Output is correct |
12 |
Correct |
1 ms |
1624 KB |
Output is correct |
13 |
Correct |
1 ms |
1480 KB |
Output is correct |
14 |
Correct |
9 ms |
7516 KB |
Output is correct |
15 |
Correct |
2 ms |
4956 KB |
Output is correct |
16 |
Correct |
5 ms |
4444 KB |
Output is correct |
17 |
Correct |
1 ms |
344 KB |
Output is correct |
18 |
Correct |
12 ms |
8028 KB |
Output is correct |
19 |
Correct |
9 ms |
8024 KB |
Output is correct |
20 |
Correct |
9 ms |
7772 KB |
Output is correct |
21 |
Correct |
12 ms |
8024 KB |
Output is correct |
22 |
Correct |
9 ms |
8028 KB |
Output is correct |
23 |
Correct |
10 ms |
7772 KB |
Output is correct |
24 |
Correct |
10 ms |
8028 KB |
Output is correct |
25 |
Correct |
10 ms |
8024 KB |
Output is correct |
26 |
Correct |
9 ms |
7956 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 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 |
1628 KB |
Output is correct |
6 |
Correct |
1 ms |
1628 KB |
Output is correct |
7 |
Correct |
1 ms |
1372 KB |
Output is correct |
8 |
Correct |
1 ms |
1628 KB |
Output is correct |
9 |
Correct |
1 ms |
1628 KB |
Output is correct |
10 |
Correct |
1 ms |
1432 KB |
Output is correct |
11 |
Correct |
1 ms |
1480 KB |
Output is correct |
12 |
Correct |
1 ms |
1624 KB |
Output is correct |
13 |
Correct |
1 ms |
1480 KB |
Output is correct |
14 |
Correct |
9 ms |
7516 KB |
Output is correct |
15 |
Correct |
2 ms |
4956 KB |
Output is correct |
16 |
Correct |
5 ms |
4444 KB |
Output is correct |
17 |
Correct |
1 ms |
344 KB |
Output is correct |
18 |
Correct |
12 ms |
8028 KB |
Output is correct |
19 |
Correct |
9 ms |
8024 KB |
Output is correct |
20 |
Correct |
9 ms |
7772 KB |
Output is correct |
21 |
Correct |
12 ms |
8024 KB |
Output is correct |
22 |
Correct |
9 ms |
8028 KB |
Output is correct |
23 |
Correct |
10 ms |
7772 KB |
Output is correct |
24 |
Correct |
10 ms |
8028 KB |
Output is correct |
25 |
Correct |
10 ms |
8024 KB |
Output is correct |
26 |
Correct |
9 ms |
7956 KB |
Output is correct |
27 |
Correct |
289 ms |
88112 KB |
Output is correct |
28 |
Correct |
9 ms |
25948 KB |
Output is correct |
29 |
Correct |
21 ms |
7780 KB |
Output is correct |
30 |
Correct |
1 ms |
604 KB |
Output is correct |
31 |
Correct |
220 ms |
72556 KB |
Output is correct |
32 |
Correct |
306 ms |
88540 KB |
Output is correct |
33 |
Correct |
278 ms |
88252 KB |
Output is correct |
34 |
Correct |
261 ms |
84212 KB |
Output is correct |
35 |
Correct |
280 ms |
88400 KB |
Output is correct |
36 |
Correct |
269 ms |
88152 KB |
Output is correct |
37 |
Correct |
340 ms |
88572 KB |
Output is correct |
38 |
Correct |
200 ms |
72516 KB |
Output is correct |
39 |
Correct |
189 ms |
72272 KB |
Output is correct |