Submission #593075

#	Time	Username	Problem	Language	Result	Execution time	Memory
593075		piOOE	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	24 ms	3848 KiB

Main

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    vector<int> a(n), b(n - 1);
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
    }
    for (int i = 0; i < n - 1; ++i) {
        b[i] = a[i + 1] - a[i];
    }
    ll R = 0;
    for (int i = 0; i < n - 1; ++i) {
        R += max(0, b[i] + 1);
    }
    ll ans = R, L = 0;
    for (int i = 0; i < n - 1; ++i) {
        R -= max(0, b[i] + 1);
        L += max(0, -b[i] + 1);
        ans = min(ans, max(L, R));
    }
    cout << ans;
    return 0;
}

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