#include<bits/stdc++.h>
using namespace std;
int O[3005][3005];
int I[3005][3005];
char c[3005][3005];
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
int H,W;
cin>>H>>W;
for(int i=1;i<=H;i++){
for(int j=1;j<=W;j++){
cin>>c[i][j];
O[i][j]=O[i-1][j]+O[i][j-1]-O[i-1][j-1];
I[i][j]=I[i-1][j]+I[i][j-1]-I[i-1][j-1];
if(c[i][j]=='O') O[i][j]++;
if(c[i][j]=='I') I[i][j]++;
}
}
long long ans=0;
for(int i=1;i<=H;i++){
for(int j=1;j<=W;j++){
if(c[i][j]=='J'){
long long a=O[i][W]-O[i-1][W]-O[i][j]+O[i-1][j];
long long b=I[H][j]-I[H][j-1]-I[i][j]+I[i][j-1];
ans+=a*b;
}
}
}
cout<<ans;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
512 KB |
Output is correct |
| 2 |
Correct |
2 ms |
384 KB |
Output is correct |
| 3 |
Correct |
2 ms |
384 KB |
Output is correct |
| 4 |
Correct |
2 ms |
384 KB |
Output is correct |
| 5 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
4 ms |
1408 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
512 KB |
Output is correct |
| 2 |
Correct |
2 ms |
384 KB |
Output is correct |
| 3 |
Correct |
2 ms |
384 KB |
Output is correct |
| 4 |
Correct |
2 ms |
384 KB |
Output is correct |
| 5 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 14 |
Correct |
14 ms |
7424 KB |
Output is correct |
| 15 |
Correct |
6 ms |
4992 KB |
Output is correct |
| 16 |
Correct |
7 ms |
4280 KB |
Output is correct |
| 17 |
Correct |
2 ms |
512 KB |
Output is correct |
| 18 |
Correct |
16 ms |
7936 KB |
Output is correct |
| 19 |
Correct |
13 ms |
7808 KB |
Output is correct |
| 20 |
Correct |
15 ms |
7808 KB |
Output is correct |
| 21 |
Correct |
19 ms |
7992 KB |
Output is correct |
| 22 |
Correct |
14 ms |
7808 KB |
Output is correct |
| 23 |
Correct |
14 ms |
7808 KB |
Output is correct |
| 24 |
Correct |
17 ms |
7936 KB |
Output is correct |
| 25 |
Correct |
14 ms |
7808 KB |
Output is correct |
| 26 |
Correct |
16 ms |
7808 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
512 KB |
Output is correct |
| 2 |
Correct |
2 ms |
384 KB |
Output is correct |
| 3 |
Correct |
2 ms |
384 KB |
Output is correct |
| 4 |
Correct |
2 ms |
384 KB |
Output is correct |
| 5 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 6 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 7 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 8 |
Correct |
4 ms |
1536 KB |
Output is correct |
| 9 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 10 |
Correct |
3 ms |
1408 KB |
Output is correct |
| 11 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 12 |
Correct |
3 ms |
1536 KB |
Output is correct |
| 13 |
Correct |
4 ms |
1408 KB |
Output is correct |
| 14 |
Correct |
14 ms |
7424 KB |
Output is correct |
| 15 |
Correct |
6 ms |
4992 KB |
Output is correct |
| 16 |
Correct |
7 ms |
4280 KB |
Output is correct |
| 17 |
Correct |
2 ms |
512 KB |
Output is correct |
| 18 |
Correct |
16 ms |
7936 KB |
Output is correct |
| 19 |
Correct |
13 ms |
7808 KB |
Output is correct |
| 20 |
Correct |
15 ms |
7808 KB |
Output is correct |
| 21 |
Correct |
19 ms |
7992 KB |
Output is correct |
| 22 |
Correct |
14 ms |
7808 KB |
Output is correct |
| 23 |
Correct |
14 ms |
7808 KB |
Output is correct |
| 24 |
Correct |
17 ms |
7936 KB |
Output is correct |
| 25 |
Correct |
14 ms |
7808 KB |
Output is correct |
| 26 |
Correct |
16 ms |
7808 KB |
Output is correct |
| 27 |
Correct |
301 ms |
83320 KB |
Output is correct |
| 28 |
Correct |
26 ms |
26104 KB |
Output is correct |
| 29 |
Correct |
17 ms |
7680 KB |
Output is correct |
| 30 |
Correct |
3 ms |
640 KB |
Output is correct |
| 31 |
Correct |
225 ms |
70072 KB |
Output is correct |
| 32 |
Correct |
234 ms |
83288 KB |
Output is correct |
| 33 |
Correct |
202 ms |
82936 KB |
Output is correct |
| 34 |
Correct |
331 ms |
80656 KB |
Output is correct |
| 35 |
Correct |
291 ms |
83200 KB |
Output is correct |
| 36 |
Correct |
201 ms |
82936 KB |
Output is correct |
| 37 |
Correct |
320 ms |
83192 KB |
Output is correct |
| 38 |
Correct |
195 ms |
70008 KB |
Output is correct |
| 39 |
Correct |
158 ms |
69752 KB |
Output is correct |
