Submission #896634

#	Time	Username	Problem	Language	Result	Execution time	Memory
896634		arbuzick	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	18 ms	3172 KiB

Main

#include <bits/stdc++.h>

using namespace std;

void solve() {
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
    }
    long long ans = 1e18 + 7;
    long long start = 0, finish = 0;
    for (int i = 0; i < n - 1; ++i) {
        if (a[i] <= a[i + 1]) {
            finish += a[i + 1] - a[i] + 1;
        }
    }
    for (int i = 0; i < n; ++i) {
        ans = min(ans, max(start, finish));
        if (i + 1 < n) {
            if (a[i] >= a[i + 1]) {
                start += a[i] - a[i + 1] + 1;
            }
            if (a[i] <= a[i + 1]) {
                finish -= a[i + 1] - a[i] + 1;
            }
        }
    }
    cout << ans << '\n';
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}

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