제출 #598601

#제출 시각아이디문제언어결과실행 시간메모리
598601MasterTasterGrowing Vegetables is Fun 4 (JOI21_ho_t1)C++14
100 / 100
95 ms5432 KiB
#include <iostream>

#define MAXN 200010

using namespace std;

long long n, a[MAXN], b[MAXN], ress;

int main() {
    cin>>n;
    for (int i=0; i<n; i++) cin>>a[i];

    for (int i=1; i<n; i++) b[i-1]=a[i]-a[i-1];

    long long levo, desno;
    levo=desno=0;
    for (int i=0; i<n-1; i++) desno+=max(0LL, (b[i]+1LL));
    ress=desno;
    for (int i=0; i<n-1; i++)
    {
        levo+=max(0LL, 1LL-b[i]);
        desno-=max(0LL, b[i]+1LL);
        ress=min(ress, max(levo, desno));
    }
    cout<<ress;
}
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