Submission #1251684

#	Time	Username	Problem	Language	Result	Execution time	Memory
1251684		inkvizytor	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++20	100 / 100	15 ms	5080 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define ll long long

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    vector<ll> a (n, 0);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    vector<ll> sp (n, 0), ss (n, 0);
    for (int i = 1; i < n; i++) {
        sp[i] = sp[i-1]+max(0ll, a[i-1]-a[i]+1);
    }
    for (int i = n-2; i >= 0; i--) {
        ss[i] = ss[i+1]+max(0ll, a[i+1]-a[i]+1);
    }
    ll w = 1e18;
    for (int i = 0; i < n; i++) {
        w = min(w, max(sp[i],ss[i]));
    }
    cout << w << '\n';
}

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