#include <bits/stdc++.h>
#define ll long long
#define ldb long double
#define endl '\n'
#define For(i,l,r) for(int i=l;i<=r;i++)
#define ForD(i,r,l) for(int i=r;i>=l;i--)
#define REP(i,l,r) For(i,l,r-1)
#define PER(i,r,l) ForD(i,r-1,l)
#define ff first
#define ss second
#define pb emplace_back
#define all(x) x.begin(),x.end()
#define All(x,n) x+1,x+1+n
#define Alll(x,n) x,x+n
#define sz(x) (signed)x.size()
#define unq(x) x.resize(unique(all(x))-x.begin())
#define mpa make_pair
#ifdef NCGM
#include"debug.h"
#else
#define debug(...) "fr";
#endif
using namespace std;
const int N=3003;
int pfX[N][N],pfY[N][N];
int n,m;
ll ans=0;
char c[N][N];
int main() {
cin.tie(0)->sync_with_stdio(0);
cin >> n >> m;
For(i,1,n)
For(j,1,m) cin >> c[i][j];
For(i,1,n) {
For(j,1,m) {
pfY[i][j]=pfY[i][j-1];
if (c[i][j]=='O') pfY[i][j]++;
}
}
For(j,1,m) {
For(i,1,n) {
pfX[i][j]=pfX[i-1][j];
if (c[i][j]=='I') pfX[i][j]++;
}
}
For(i,1,n)
For(j,1,m) if (c[i][j]=='J') {
ll num1=pfX[n][j]-pfX[i-1][j],num2=pfY[i][m]-pfY[i][j-1];
ans+=num1*num2;
}
cout << ans;
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 12 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4956 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 12 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 14 |
Correct |
6 ms |
13404 KB |
Output is correct |
| 15 |
Correct |
1 ms |
10332 KB |
Output is correct |
| 16 |
Correct |
3 ms |
8028 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
7 ms |
13916 KB |
Output is correct |
| 19 |
Correct |
5 ms |
13660 KB |
Output is correct |
| 20 |
Correct |
6 ms |
13736 KB |
Output is correct |
| 21 |
Correct |
7 ms |
13916 KB |
Output is correct |
| 22 |
Correct |
6 ms |
13660 KB |
Output is correct |
| 23 |
Correct |
5 ms |
13660 KB |
Output is correct |
| 24 |
Correct |
7 ms |
13912 KB |
Output is correct |
| 25 |
Correct |
6 ms |
13660 KB |
Output is correct |
| 26 |
Correct |
5 ms |
13660 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 6 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 7 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 8 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 12 |
Correct |
2 ms |
4956 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4956 KB |
Output is correct |
| 14 |
Correct |
6 ms |
13404 KB |
Output is correct |
| 15 |
Correct |
1 ms |
10332 KB |
Output is correct |
| 16 |
Correct |
3 ms |
8028 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 18 |
Correct |
7 ms |
13916 KB |
Output is correct |
| 19 |
Correct |
5 ms |
13660 KB |
Output is correct |
| 20 |
Correct |
6 ms |
13736 KB |
Output is correct |
| 21 |
Correct |
7 ms |
13916 KB |
Output is correct |
| 22 |
Correct |
6 ms |
13660 KB |
Output is correct |
| 23 |
Correct |
5 ms |
13660 KB |
Output is correct |
| 24 |
Correct |
7 ms |
13912 KB |
Output is correct |
| 25 |
Correct |
6 ms |
13660 KB |
Output is correct |
| 26 |
Correct |
5 ms |
13660 KB |
Output is correct |
| 27 |
Correct |
165 ms |
87892 KB |
Output is correct |
| 28 |
Correct |
8 ms |
46680 KB |
Output is correct |
| 29 |
Correct |
10 ms |
10588 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2652 KB |
Output is correct |
| 31 |
Correct |
121 ms |
75504 KB |
Output is correct |
| 32 |
Correct |
127 ms |
88556 KB |
Output is correct |
| 33 |
Correct |
121 ms |
88404 KB |
Output is correct |
| 34 |
Correct |
142 ms |
84716 KB |
Output is correct |
| 35 |
Correct |
127 ms |
88400 KB |
Output is correct |
| 36 |
Correct |
114 ms |
88404 KB |
Output is correct |
| 37 |
Correct |
201 ms |
88400 KB |
Output is correct |
| 38 |
Correct |
87 ms |
75512 KB |
Output is correct |
| 39 |
Correct |
83 ms |
75604 KB |
Output is correct |
