oj.uz

Submission #467567

# Submission time Handle Problem Language Result Execution time Memory
467567 2021-08-23T17:14:11 Z MN22 Bitaro the Brave (JOI19_ho_t1) C++17
0 / 100
 1 ms 332 KB 
#pragma GCC optimize("O3")
#include <bits/stdc++.h>

#define F first
#define S second
#define pb push_back
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define endl "\n"
#define yn ynnnnnn

using namespace std;

const int INF = 1000000007;
const int N = 3005;

int dpi[N][N], dpo[N][N];
char a[N][N];
int h, w;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> h >> w;
    for(int i = 1; i <= h; i++) {
        for(int j = 1; j <= w; j++) {
            cin >> a[i][j];
        }
    }
    for(int j = 1; j <= w; j++) {
        for(int i = 1; i <= h; i++) {
            if(a[i][j] == 'I') {
                dpi[i][j] = dpi[i - 1][j] + 1;
            } else {
                dpi[i][j] = dpi[i-1][j];
            }
        }
    }
    for(int i = 1; i <= h; i++) {
        for(int j = 1; j <= w; j++) {
            if(a[i][j] == 'O') {
                dpo[i][j] = dpo[i - 1][j] + 1;
            } else {
                dpo[i][j] = dpo[i-1][j];
            }
        }
    }
    int ansi, anso;
    ll res = 0;
    for(int i = 1; i <= h; i++) {
        for(int j = 1; j <= w; j++) {
            if(a[i][j] == 'J') {
                ansi = dpi[w-1][j] - dpi[i-1][j];
                anso = dpo[i][h-1] - dpo[i][j-1];
                //cout << ansi << " " << anso << endl;
                res += ansi * anso * 1ll;
            }
        }
    }
    cout << res << endl;
    return 0;
}

Subtask #1
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Incorrect 1 ms 332 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Incorrect 1 ms 332 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Incorrect 1 ms 332 KB Output isn't correct
3 Halted 0 ms 0 KB -