Submission #936674

#	Time	Username	Problem	Language	Result	Execution time	Memory
936674		kitlix	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	24 ms	1884 KiB

Main

#include <bits/stdc++.h>
#define int long long

using namespace std;

signed main() {
    ios_base::sync_with_stdio(0), cin.tie(0);
    int n;
    cin >> n;
    vector<int> a(n);
    for (auto& el : a)
        cin >> el;
    int left = 0, right = 0;
    for (int i = 0; i + 1 < n; ++i)
        if (a[i] <= a[i + 1])
            right += a[i + 1] - a[i] + 1;
    int best = right;
    for (int i = 1; i < n; ++i) {
        if (a[i - 1] <= a[i])
            right -= a[i] - a[i - 1] + 1;
        if (a[i] <= a[i - 1])
            left += a[i - 1] - a[i] + 1;
        best = min(best, max(left, right));
    }
    cout << best;
}

• Subtask 1: 40 / 40
• Subtask 2: 60 / 60