Submission #704645

#	Time	Username	Problem	Language	Result	Execution time	Memory
704645		Stickfish	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	90 ms	3020 KiB

Main

#include <iostream>
using namespace std;
using ll = long long;

const int MAXN = 2e5 + 123;
int a[MAXN];

signed main() {
    int n;
    cin >> n;
    for (int i = 0; i < n; ++i)
        cin >> a[i];
    for (int i = n - 1; i > 0; --i)
        a[i] -= a[i - 1];
    ll ans = 0;
    
    ll rval = 0;
    for (int i = 1; i < n; ++i)
        rval += max(0, a[i] + 1);
    ll lval = 0;
    ans = rval;
    for (int i = 1; i < n; ++i) {
        rval -= max(0, a[i] + 1);
        lval += max(0, -a[i] + 1);
        ans = min(ans, max(rval, lval));
    }
    cout << ans << '\n';
}

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