// In the name of God
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pii;
typedef pair<ll, ll> pll;
#define pb push_back
#define S second
#define F first
#define mp make_pair
#define smax(x, y) (x) = max((x), (y))
#define smin(x, y) (x) = min((x), (y))
#define all(x) (x).begin(), (x).end()
#define len(x) ((ll)(x).size())
const int maxn = 3000 + 5;
const int inf = 1e9 + 7;
int n, m, orb[maxn][maxn], ing[maxn][maxn];
string a[maxn];
int32_t main()
{
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
cin >> n >> m;
for(int i = 0; i < n; i++) cin >> a[i];
for(int i = 0; i < n; i++){
for(int j = m - 1; j >= 0; j--)
orb[i][j] = orb[i][j + 1] + (a[i][j] == 'O');
}
ll ans = 0;
for(int j = 0; j < m; j++){
for(int i = n - 1; i >= 0; i--){
ing[i][j] = ing[i + 1][j] + (a[i][j] == 'I');
if(a[i][j] == 'J') ans += ing[i][j] * orb[i][j];
}
}
cout << ans << '\n';
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
604 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1368 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1116 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
604 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1368 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 14 |
Correct |
6 ms |
8540 KB |
Output is correct |
| 15 |
Correct |
2 ms |
6448 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4700 KB |
Output is correct |
| 17 |
Correct |
1 ms |
600 KB |
Output is correct |
| 18 |
Correct |
6 ms |
9052 KB |
Output is correct |
| 19 |
Correct |
5 ms |
8792 KB |
Output is correct |
| 20 |
Correct |
5 ms |
8796 KB |
Output is correct |
| 21 |
Correct |
7 ms |
9068 KB |
Output is correct |
| 22 |
Correct |
5 ms |
8796 KB |
Output is correct |
| 23 |
Correct |
5 ms |
8796 KB |
Output is correct |
| 24 |
Correct |
6 ms |
9052 KB |
Output is correct |
| 25 |
Correct |
4 ms |
8796 KB |
Output is correct |
| 26 |
Correct |
4 ms |
8796 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Correct |
1 ms |
348 KB |
Output is correct |
| 4 |
Correct |
1 ms |
604 KB |
Output is correct |
| 5 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 6 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 7 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 8 |
Correct |
1 ms |
1368 KB |
Output is correct |
| 9 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 10 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 11 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 12 |
Correct |
1 ms |
1372 KB |
Output is correct |
| 13 |
Correct |
1 ms |
1116 KB |
Output is correct |
| 14 |
Correct |
6 ms |
8540 KB |
Output is correct |
| 15 |
Correct |
2 ms |
6448 KB |
Output is correct |
| 16 |
Correct |
3 ms |
4700 KB |
Output is correct |
| 17 |
Correct |
1 ms |
600 KB |
Output is correct |
| 18 |
Correct |
6 ms |
9052 KB |
Output is correct |
| 19 |
Correct |
5 ms |
8792 KB |
Output is correct |
| 20 |
Correct |
5 ms |
8796 KB |
Output is correct |
| 21 |
Correct |
7 ms |
9068 KB |
Output is correct |
| 22 |
Correct |
5 ms |
8796 KB |
Output is correct |
| 23 |
Correct |
5 ms |
8796 KB |
Output is correct |
| 24 |
Correct |
6 ms |
9052 KB |
Output is correct |
| 25 |
Correct |
4 ms |
8796 KB |
Output is correct |
| 26 |
Correct |
4 ms |
8796 KB |
Output is correct |
| 27 |
Correct |
158 ms |
88540 KB |
Output is correct |
| 28 |
Correct |
10 ms |
36704 KB |
Output is correct |
| 29 |
Correct |
7 ms |
7884 KB |
Output is correct |
| 30 |
Correct |
1 ms |
604 KB |
Output is correct |
| 31 |
Correct |
122 ms |
72116 KB |
Output is correct |
| 32 |
Correct |
126 ms |
89308 KB |
Output is correct |
| 33 |
Correct |
141 ms |
89344 KB |
Output is correct |
| 34 |
Correct |
135 ms |
83452 KB |
Output is correct |
| 35 |
Correct |
141 ms |
89344 KB |
Output is correct |
| 36 |
Correct |
142 ms |
89300 KB |
Output is correct |
| 37 |
Correct |
158 ms |
89640 KB |
Output is correct |
| 38 |
Correct |
97 ms |
71824 KB |
Output is correct |
| 39 |
Correct |
95 ms |
71588 KB |
Output is correct |
