#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main()
{
int n,m;cin>>n>>m;
int a[n+1][m+1];
for(int i=1;i<=n;i++)
{
string s;cin>>s;
for(int j=0;j<m;j++)
{
if(s[j]=='J') a[i][j+1]=0;
if(s[j]=='O') a[i][j+1]=1;
if(s[j]=='I') a[i][j+1]=2;
}
}
int pref[3][n+1][m+1];
memset(pref,0,sizeof(pref));
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
for(int k=0;k<=2;k++) pref[k][i][j]=pref[k][i-1][j]+pref[k][i][j-1]-pref[k][i-1][j-1];
pref[a[i][j]][i][j]++;
}
}
int res=0;
for(int i=1;i<=n;i++)
{
for(int j=1;j<=m;j++)
{
if(a[i][j]!=0) continue;
int x=pref[1][i][m]-pref[1][i-1][m]-pref[1][i][j]+pref[1][i-1][j];
int y=pref[2][n][j]-pref[2][n][j-1]-pref[2][i][j]+pref[2][i][j-1];
res+=x*y;
}
}
cout<<res;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 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 |
600 KB |
Output is correct |
9 |
Correct |
1 ms |
600 KB |
Output is correct |
10 |
Correct |
1 ms |
604 KB |
Output is correct |
11 |
Correct |
1 ms |
604 KB |
Output is correct |
12 |
Correct |
1 ms |
604 KB |
Output is correct |
13 |
Correct |
1 ms |
604 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 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 |
600 KB |
Output is correct |
9 |
Correct |
1 ms |
600 KB |
Output is correct |
10 |
Correct |
1 ms |
604 KB |
Output is correct |
11 |
Correct |
1 ms |
604 KB |
Output is correct |
12 |
Correct |
1 ms |
604 KB |
Output is correct |
13 |
Correct |
1 ms |
604 KB |
Output is correct |
14 |
Correct |
11 ms |
6492 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
7 ms |
4544 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
11 ms |
8388 KB |
Output is correct |
19 |
Correct |
9 ms |
8056 KB |
Output is correct |
20 |
Correct |
9 ms |
8280 KB |
Output is correct |
21 |
Correct |
11 ms |
8540 KB |
Output is correct |
22 |
Correct |
9 ms |
8128 KB |
Output is correct |
23 |
Correct |
9 ms |
8348 KB |
Output is correct |
24 |
Correct |
11 ms |
8284 KB |
Output is correct |
25 |
Correct |
9 ms |
8028 KB |
Output is correct |
26 |
Correct |
9 ms |
8312 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
344 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 |
600 KB |
Output is correct |
9 |
Correct |
1 ms |
600 KB |
Output is correct |
10 |
Correct |
1 ms |
604 KB |
Output is correct |
11 |
Correct |
1 ms |
604 KB |
Output is correct |
12 |
Correct |
1 ms |
604 KB |
Output is correct |
13 |
Correct |
1 ms |
604 KB |
Output is correct |
14 |
Correct |
11 ms |
6492 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
7 ms |
4544 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
11 ms |
8388 KB |
Output is correct |
19 |
Correct |
9 ms |
8056 KB |
Output is correct |
20 |
Correct |
9 ms |
8280 KB |
Output is correct |
21 |
Correct |
11 ms |
8540 KB |
Output is correct |
22 |
Correct |
9 ms |
8128 KB |
Output is correct |
23 |
Correct |
9 ms |
8348 KB |
Output is correct |
24 |
Correct |
11 ms |
8284 KB |
Output is correct |
25 |
Correct |
9 ms |
8028 KB |
Output is correct |
26 |
Correct |
9 ms |
8312 KB |
Output is correct |
27 |
Correct |
391 ms |
274432 KB |
Output is correct |
28 |
Correct |
1 ms |
1112 KB |
Output is correct |
29 |
Correct |
28 ms |
21340 KB |
Output is correct |
30 |
Correct |
2 ms |
1112 KB |
Output is correct |
31 |
Correct |
278 ms |
202532 KB |
Output is correct |
32 |
Runtime error |
270 ms |
274432 KB |
Execution killed with signal 9 |
33 |
Halted |
0 ms |
0 KB |
- |