#include<iostream>
#include<vector>
#include<algorithm>
#include<set>
#include<map>
using namespace std;
#define ll long long
#define endl "\n"
#define mp make_pair
#define out(x) cout<< #x << " = " << x << endl
#define pii pair<int,int>
#pragma GCC optimize("Ofast")
int n,m;
int arr[3005][3005];
int Opre[3005][3005], Ipre[3005][3005];
signed main(){
ios::sync_with_stdio(false); cin.tie(0);
cin>>n>>m;
for (int i=1;i<=n;i++) for (int j=1;j<=m;j++){
char c; cin>>c;
if (c=='J') arr[i][j] = 0;
if (c=='O') arr[i][j] = 1;
if (c=='I') arr[i][j] = 2;
}
for (int i=1;i<=n;i++) for (int j=1;j<=m;j++) Opre[i][j] = Opre[i][j-1] + (arr[i][j] == 1);
for (int j=1;j<=m;j++) for (int i=1;i<=n;i++) Ipre[i][j] = Ipre[i-1][j] + (arr[i][j] == 2);
ll ans = 0;
for (int i=1;i<=n;i++) for (int j=1;j<=m;j++) if (arr[i][j] == 0){
int x = Opre[i][m] - Opre[i][j];
int y = Ipre[n][j] - Ipre[i][j];
ans += 1ll * x * y;
}
cout<<ans<<endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
328 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1488 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1612 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1492 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1616 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1492 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
328 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1488 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1612 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1492 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1616 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1492 KB |
Output is correct |
| 14 |
Correct |
11 ms |
8704 KB |
Output is correct |
| 15 |
Correct |
3 ms |
5460 KB |
Output is correct |
| 16 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
12 ms |
9492 KB |
Output is correct |
| 19 |
Correct |
10 ms |
9380 KB |
Output is correct |
| 20 |
Correct |
8 ms |
9300 KB |
Output is correct |
| 21 |
Correct |
12 ms |
9412 KB |
Output is correct |
| 22 |
Correct |
10 ms |
9360 KB |
Output is correct |
| 23 |
Correct |
8 ms |
9268 KB |
Output is correct |
| 24 |
Correct |
11 ms |
9476 KB |
Output is correct |
| 25 |
Correct |
9 ms |
9416 KB |
Output is correct |
| 26 |
Correct |
8 ms |
9300 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
340 KB |
Output is correct |
| 3 |
Correct |
1 ms |
328 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1488 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1612 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1492 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1616 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1620 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1492 KB |
Output is correct |
| 14 |
Correct |
11 ms |
8704 KB |
Output is correct |
| 15 |
Correct |
3 ms |
5460 KB |
Output is correct |
| 16 |
Correct |
5 ms |
5076 KB |
Output is correct |
| 17 |
Correct |
1 ms |
468 KB |
Output is correct |
| 18 |
Correct |
12 ms |
9492 KB |
Output is correct |
| 19 |
Correct |
10 ms |
9380 KB |
Output is correct |
| 20 |
Correct |
8 ms |
9300 KB |
Output is correct |
| 21 |
Correct |
12 ms |
9412 KB |
Output is correct |
| 22 |
Correct |
10 ms |
9360 KB |
Output is correct |
| 23 |
Correct |
8 ms |
9268 KB |
Output is correct |
| 24 |
Correct |
11 ms |
9476 KB |
Output is correct |
| 25 |
Correct |
9 ms |
9416 KB |
Output is correct |
| 26 |
Correct |
8 ms |
9300 KB |
Output is correct |
| 27 |
Correct |
315 ms |
114524 KB |
Output is correct |
| 28 |
Correct |
13 ms |
28620 KB |
Output is correct |
| 29 |
Correct |
14 ms |
10084 KB |
Output is correct |
| 30 |
Correct |
2 ms |
588 KB |
Output is correct |
| 31 |
Correct |
234 ms |
94536 KB |
Output is correct |
| 32 |
Correct |
255 ms |
114908 KB |
Output is correct |
| 33 |
Correct |
215 ms |
114508 KB |
Output is correct |
| 34 |
Correct |
266 ms |
109700 KB |
Output is correct |
| 35 |
Correct |
261 ms |
114880 KB |
Output is correct |
| 36 |
Correct |
223 ms |
114524 KB |
Output is correct |
| 37 |
Correct |
328 ms |
114964 KB |
Output is correct |
| 38 |
Correct |
172 ms |
94540 KB |
Output is correct |
| 39 |
Correct |
157 ms |
94252 KB |
Output is correct |
