Submission #873063

#	Time	Username	Problem	Language	Result	Execution time	Memory
873063		TAhmed33	Zemljište (COCI22_zemljiste)	C++98	70 / 70	441 ms	2660 KiB

Main

 #include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll pref[501][501], n, m, a, b;
ll dist (ll x) {
    return abs(x - a) + abs(x - b);
}
int main () {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin >> n >> m >> a >> b;
    if (a > b) swap(a, b);
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            cin >> pref[i][j]; pref[i][j] += pref[i - 1][j];
        }
    }
    ll mn = 1e18;
    for (int l = 1; l <= n; l++) {
        for (int r = l; r <= n; r++) {
            ll arr[m + 1] = {};
            for (int j = 1; j <= m; j++) {
                arr[j] = pref[r][j] - pref[l - 1][j];
                arr[j] += arr[j - 1];
            } 
            int ptr = 1;
            for (int i = 1; i <= m; i++) {
                while (arr[i] - arr[ptr] >= a && ptr < i) ptr++;
                mn = min(mn,  dist(arr[i] - arr[ptr]));
                if (ptr) mn = min(mn, dist(arr[i] - arr[ptr - 1]));
            }
        }
    }
    cout << mn << '\n';
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 40 / 40