#include <bits/stdc++.h>
#define all(x) x.begin(), x.end()
#define sz(x) (int) x.size()
#define endl '\n'
#define pb push_back
#define _ ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
using namespace std;
using ll = long long;
using ull = unsigned long long;
using ii = pair<int,int>;
using iii = tuple<int,int,int>;
const int inf = 2e9+1;
const int mod = 1e9+7;
const int maxn = 3010;
template<typename X, typename Y> bool ckmin(X& x, const Y& y) { return (y < x) ? (x=y,1):0; }
template<typename X, typename Y> bool ckmax(X& x, const Y& y) { return (x < y) ? (x=y,1):0; }
string grid[maxn];
ll suf1[maxn][maxn], suf2[maxn][maxn];
int main(){_
int h,w;cin>>h>>w;
for(int i=0;i<h;++i)cin>>grid[i];
ll ans = 0;
for(int i=h-1;~i;--i){
for(int j=w-1;~j;--j){
suf1[i][j] = suf1[i][j+1] + (grid[i][j]=='O');
suf2[i][j] = suf2[i+1][j] + (grid[i][j]=='I');
}
}
for(int i=0;i<h;++i)
for(int j=0;j<w;++j)
if(grid[i][j]=='J')ans += suf1[i][j]*suf2[i][j];
cout<<ans<<endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
420 KB |
Output is correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
468 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1236 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
420 KB |
Output is correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
468 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 14 |
Correct |
5 ms |
7736 KB |
Output is correct |
| 15 |
Correct |
2 ms |
3880 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4692 KB |
Output is correct |
| 17 |
Correct |
0 ms |
556 KB |
Output is correct |
| 18 |
Correct |
6 ms |
8844 KB |
Output is correct |
| 19 |
Correct |
5 ms |
8664 KB |
Output is correct |
| 20 |
Correct |
5 ms |
8612 KB |
Output is correct |
| 21 |
Correct |
6 ms |
8784 KB |
Output is correct |
| 22 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 23 |
Correct |
6 ms |
8660 KB |
Output is correct |
| 24 |
Correct |
7 ms |
8788 KB |
Output is correct |
| 25 |
Correct |
5 ms |
8608 KB |
Output is correct |
| 26 |
Correct |
5 ms |
8660 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
420 KB |
Output is correct |
| 3 |
Correct |
0 ms |
340 KB |
Output is correct |
| 4 |
Correct |
1 ms |
468 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1364 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 14 |
Correct |
5 ms |
7736 KB |
Output is correct |
| 15 |
Correct |
2 ms |
3880 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4692 KB |
Output is correct |
| 17 |
Correct |
0 ms |
556 KB |
Output is correct |
| 18 |
Correct |
6 ms |
8844 KB |
Output is correct |
| 19 |
Correct |
5 ms |
8664 KB |
Output is correct |
| 20 |
Correct |
5 ms |
8612 KB |
Output is correct |
| 21 |
Correct |
6 ms |
8784 KB |
Output is correct |
| 22 |
Correct |
5 ms |
8576 KB |
Output is correct |
| 23 |
Correct |
6 ms |
8660 KB |
Output is correct |
| 24 |
Correct |
7 ms |
8788 KB |
Output is correct |
| 25 |
Correct |
5 ms |
8608 KB |
Output is correct |
| 26 |
Correct |
5 ms |
8660 KB |
Output is correct |
| 27 |
Correct |
122 ms |
159112 KB |
Output is correct |
| 28 |
Correct |
10 ms |
19540 KB |
Output is correct |
| 29 |
Correct |
10 ms |
13860 KB |
Output is correct |
| 30 |
Correct |
1 ms |
812 KB |
Output is correct |
| 31 |
Correct |
99 ms |
130988 KB |
Output is correct |
| 32 |
Correct |
100 ms |
160176 KB |
Output is correct |
| 33 |
Correct |
97 ms |
159760 KB |
Output is correct |
| 34 |
Correct |
112 ms |
151932 KB |
Output is correct |
| 35 |
Correct |
102 ms |
160188 KB |
Output is correct |
| 36 |
Correct |
98 ms |
159708 KB |
Output is correct |
| 37 |
Correct |
137 ms |
160304 KB |
Output is correct |
| 38 |
Correct |
79 ms |
130124 KB |
Output is correct |
| 39 |
Correct |
79 ms |
130416 KB |
Output is correct |
