#include<bits/stdc++.h>
using namespace std;
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
int n,m;cin>>n>>m;
vector<string>arr(n);
for (int i = 0;i<n;++i)cin>>arr[i];
long long ans = 0;
vector<vector<int>>pref(n,vector<int>(m + 1,0));
vector<vector<int>>pref2(m,vector<int>(n + 1,0));
for (int i = 0;i<n;++i){
for (int j = 0;j<m;++j){
pref[i][j + 1] = pref[i][j] + (arr[i][j] == 'O');
}
}
for (int i = 0;i<m;++i){
for (int j = 0;j<n;++j){
pref2[i][j + 1] = pref2[i][j] + (arr[j][i] == 'I');
}
}
for (int i = 0;i<n;++i){
for (int j = 0;j<m;++j){
if (arr[i][j]!='J')continue;
int l = pref[i][m] - pref[i][j];
int k = pref2[j][n] - pref2[j][i];
ans+=l * k;
}
}
cout<<ans<<'\n';
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Correct |
1 ms |
328 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Correct |
1 ms |
328 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 15 |
Correct |
1 ms |
320 KB |
Output is correct |
| 16 |
Correct |
2 ms |
1596 KB |
Output is correct |
| 17 |
Correct |
1 ms |
320 KB |
Output is correct |
| 18 |
Correct |
3 ms |
2772 KB |
Output is correct |
| 19 |
Correct |
3 ms |
2644 KB |
Output is correct |
| 20 |
Correct |
4 ms |
2772 KB |
Output is correct |
| 21 |
Correct |
4 ms |
2760 KB |
Output is correct |
| 22 |
Correct |
3 ms |
2636 KB |
Output is correct |
| 23 |
Correct |
3 ms |
2772 KB |
Output is correct |
| 24 |
Correct |
4 ms |
2768 KB |
Output is correct |
| 25 |
Correct |
3 ms |
2644 KB |
Output is correct |
| 26 |
Correct |
3 ms |
2772 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
212 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
212 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
1 ms |
320 KB |
Output is correct |
| 7 |
Correct |
1 ms |
328 KB |
Output is correct |
| 8 |
Correct |
1 ms |
340 KB |
Output is correct |
| 9 |
Correct |
1 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
332 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
3 ms |
2260 KB |
Output is correct |
| 15 |
Correct |
1 ms |
320 KB |
Output is correct |
| 16 |
Correct |
2 ms |
1596 KB |
Output is correct |
| 17 |
Correct |
1 ms |
320 KB |
Output is correct |
| 18 |
Correct |
3 ms |
2772 KB |
Output is correct |
| 19 |
Correct |
3 ms |
2644 KB |
Output is correct |
| 20 |
Correct |
4 ms |
2772 KB |
Output is correct |
| 21 |
Correct |
4 ms |
2760 KB |
Output is correct |
| 22 |
Correct |
3 ms |
2636 KB |
Output is correct |
| 23 |
Correct |
3 ms |
2772 KB |
Output is correct |
| 24 |
Correct |
4 ms |
2768 KB |
Output is correct |
| 25 |
Correct |
3 ms |
2644 KB |
Output is correct |
| 26 |
Correct |
3 ms |
2772 KB |
Output is correct |
| 27 |
Correct |
196 ms |
84588 KB |
Output is correct |
| 28 |
Correct |
1 ms |
720 KB |
Output is correct |
| 29 |
Correct |
7 ms |
6732 KB |
Output is correct |
| 30 |
Correct |
1 ms |
596 KB |
Output is correct |
| 31 |
Correct |
114 ms |
62388 KB |
Output is correct |
| 32 |
Correct |
154 ms |
89076 KB |
Output is correct |
| 33 |
Correct |
189 ms |
89336 KB |
Output is correct |
| 34 |
Correct |
140 ms |
72072 KB |
Output is correct |
| 35 |
Correct |
212 ms |
88908 KB |
Output is correct |
| 36 |
Correct |
188 ms |
89224 KB |
Output is correct |
| 37 |
Correct |
196 ms |
89632 KB |
Output is correct |
| 38 |
Correct |
92 ms |
61796 KB |
Output is correct |
| 39 |
Correct |
139 ms |
62036 KB |
Output is correct |
