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Submission #837124

# Submission time Handle Problem Language Result Execution time Memory
837124 2023-08-25T01:36:16 Z makanhulia Orchard (NOI14_orchard) C++17
25 / 25
 101 ms 19884 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define ull unsigned long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define fi first
#define se second

const int N = 2e5 + 5;

int main() { 
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    int n, m, ans = 0;
    cin >> n >> m;
    vector<vector<int>> a(n + 1, vector<int>(m + 1, 0)), pref(n + 1, vector<int>(m + 1, 0));
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            cin >> a[i][j];
            if (a[i][j] == 1) ans--;
            else a[i][j] = -1;
        }
    }
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) pref[i][j] = pref[i - 1][j] + a[i][j];
    }
    int mx = 0;
    for (int i = 1; i <= n; i++) {
        for (int j = i; j <= n; j++) {
            int sum = 0;
            for (int k = 1; k <= m; k++) {
                sum = max(0, sum + pref[j][k] - pref[i - 1][k]);
                mx = max(mx, sum);
            }
        }
    }
    cout << -1 * (ans + mx) << "\n";
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 596 KB Output is correct
2 Correct 1 ms 596 KB Output is correct
3 Correct 1 ms 596 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 19856 KB Output is correct
2 Correct 53 ms 19856 KB Output is correct
3 Correct 53 ms 19884 KB Output is correct

Subtask #4
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 3020 KB Output is correct
2 Correct 10 ms 3404 KB Output is correct
3 Correct 10 ms 3404 KB Output is correct

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 4 ms 460 KB Output is correct
3 Correct 3 ms 456 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 6236 KB Output is correct
2 Correct 101 ms 7648 KB Output is correct
3 Correct 101 ms 7708 KB Output is correct