#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef long double ld;
const ll MOD=1e9+7;
const ll N=5e3+5;
const ld pi=3.14159265359;
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(a) (ll)a.size()
ll n,m,O[N][N],I[N][N],ans;
string s[N];
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);
cin>>n>>m;
REP1(i,n)cin>>s[i];
REP1(i,n)REP(j,m){
O[i][j]=(j==0?0:O[i][j-1])+(s[i][j]=='O');
I[i][j]=I[i-1][j]+(s[i][j]=='I');
}
REP1(i,n){
REP(j,m){
if(s[i][j]=='J'){
ans+=(I[n][j]-I[i][j])*(O[i][m-1]-O[i][j]);
}
}
}
cout<<ans<<"\n";
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
504 KB |
Output is correct |
| 2 |
Correct |
5 ms |
504 KB |
Output is correct |
| 3 |
Correct |
5 ms |
504 KB |
Output is correct |
| 4 |
Correct |
5 ms |
632 KB |
Output is correct |
| 5 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 6 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 7 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 8 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 9 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 10 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 11 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 12 |
Correct |
6 ms |
1528 KB |
Output is correct |
| 13 |
Correct |
5 ms |
1400 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
504 KB |
Output is correct |
| 2 |
Correct |
5 ms |
504 KB |
Output is correct |
| 3 |
Correct |
5 ms |
504 KB |
Output is correct |
| 4 |
Correct |
5 ms |
632 KB |
Output is correct |
| 5 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 6 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 7 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 8 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 9 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 10 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 11 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 12 |
Correct |
6 ms |
1528 KB |
Output is correct |
| 13 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 14 |
Correct |
10 ms |
7928 KB |
Output is correct |
| 15 |
Correct |
6 ms |
3960 KB |
Output is correct |
| 16 |
Correct |
9 ms |
4856 KB |
Output is correct |
| 17 |
Correct |
5 ms |
632 KB |
Output is correct |
| 18 |
Correct |
11 ms |
8952 KB |
Output is correct |
| 19 |
Correct |
11 ms |
8824 KB |
Output is correct |
| 20 |
Correct |
10 ms |
8824 KB |
Output is correct |
| 21 |
Correct |
11 ms |
8952 KB |
Output is correct |
| 22 |
Correct |
10 ms |
8828 KB |
Output is correct |
| 23 |
Correct |
10 ms |
8824 KB |
Output is correct |
| 24 |
Correct |
11 ms |
8952 KB |
Output is correct |
| 25 |
Correct |
10 ms |
8824 KB |
Output is correct |
| 26 |
Correct |
10 ms |
8824 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
5 ms |
504 KB |
Output is correct |
| 2 |
Correct |
5 ms |
504 KB |
Output is correct |
| 3 |
Correct |
5 ms |
504 KB |
Output is correct |
| 4 |
Correct |
5 ms |
632 KB |
Output is correct |
| 5 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 6 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 7 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 8 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 9 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 10 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 11 |
Correct |
5 ms |
1528 KB |
Output is correct |
| 12 |
Correct |
6 ms |
1528 KB |
Output is correct |
| 13 |
Correct |
5 ms |
1400 KB |
Output is correct |
| 14 |
Correct |
10 ms |
7928 KB |
Output is correct |
| 15 |
Correct |
6 ms |
3960 KB |
Output is correct |
| 16 |
Correct |
9 ms |
4856 KB |
Output is correct |
| 17 |
Correct |
5 ms |
632 KB |
Output is correct |
| 18 |
Correct |
11 ms |
8952 KB |
Output is correct |
| 19 |
Correct |
11 ms |
8824 KB |
Output is correct |
| 20 |
Correct |
10 ms |
8824 KB |
Output is correct |
| 21 |
Correct |
11 ms |
8952 KB |
Output is correct |
| 22 |
Correct |
10 ms |
8828 KB |
Output is correct |
| 23 |
Correct |
10 ms |
8824 KB |
Output is correct |
| 24 |
Correct |
11 ms |
8952 KB |
Output is correct |
| 25 |
Correct |
10 ms |
8824 KB |
Output is correct |
| 26 |
Correct |
10 ms |
8824 KB |
Output is correct |
| 27 |
Correct |
156 ms |
175092 KB |
Output is correct |
| 28 |
Correct |
14 ms |
19832 KB |
Output is correct |
| 29 |
Correct |
14 ms |
14072 KB |
Output is correct |
| 30 |
Correct |
5 ms |
1016 KB |
Output is correct |
| 31 |
Correct |
114 ms |
131192 KB |
Output is correct |
| 32 |
Correct |
135 ms |
182904 KB |
Output is correct |
| 33 |
Correct |
131 ms |
183416 KB |
Output is correct |
| 34 |
Correct |
133 ms |
152184 KB |
Output is correct |
| 35 |
Correct |
131 ms |
182904 KB |
Output is correct |
| 36 |
Correct |
130 ms |
183416 KB |
Output is correct |
| 37 |
Correct |
165 ms |
184052 KB |
Output is correct |
| 38 |
Correct |
97 ms |
130296 KB |
Output is correct |
| 39 |
Correct |
97 ms |
130740 KB |
Output is correct |
