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Submission #950683

# Submission time Handle Problem Language Result Execution time Memory
950683 2024-03-20T15:06:22 Z Irate Orchard (NOI14_orchard) C++17
25 / 25
 130 ms 20020 KB 
#include<bits/stdc++.h>
using namespace std;
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    vector<vector<int>>grid(n + 1, vector<int>(m + 1));
    vector<vector<int>>pref(n + 1, vector<int>(m + 1));
    for(int i = 1;i <= n;++i){
        for(int j = 1;j <= m;++j){
            cin >> grid[i][j];
            pref[i][j] = pref[i - 1][j] + pref[i][j - 1] - pref[i - 1][j - 1] + grid[i][j];
        }
    }
    const int total = pref[n][m];
    int res = 1e9;
    for(int k = 1;k <= n;++k){
        for(int i = 1;i + k - 1 <= n;++i){
            int mn = -1;
            for(int j = 1;j <= m;++j){
                int sum = pref[i + k - 1][j] - pref[i - 1][j];
                res = min(res, j * k - 2 * sum + total + k + mn);
                mn = min(mn, 2 * sum - k * (j + 1));
            }
        }
    }
    cout << res << '\n';
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 604 KB Output is correct
2 Correct 2 ms 604 KB Output is correct
3 Correct 2 ms 644 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 20020 KB Output is correct
2 Correct 50 ms 19988 KB Output is correct
3 Correct 49 ms 19992 KB Output is correct

Subtask #4
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 3028 KB Output is correct
2 Correct 10 ms 3028 KB Output is correct
3 Correct 14 ms 3212 KB Output is correct

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 344 KB Output is correct
2 Correct 4 ms 600 KB Output is correct
3 Correct 4 ms 604 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 121 ms 6236 KB Output is correct
2 Correct 120 ms 6372 KB Output is correct
3 Correct 130 ms 6376 KB Output is correct