Submission #964344

#	Time	Username	Problem	Language	Result	Execution time	Memory
964344		maxFedorchuk	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	21 ms	7232 KiB

Main

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

const long long MX=2e5+10;
const long long INF=1e18;
long long a[MX],pr[MX],syf[MX];

int main()
{
    cin.tie(0);
    ios_base::sync_with_stdio(0);

    long long n;
    cin>>n;

    for(long long i=1;i<=n;i++)
    {
        cin>>a[i];
    }

    for(long long i=2;i<=n;i++)
    {
        pr[i]=pr[i-1]+max(0LL,a[i-1]+1-a[i]);
    }

    for(long long i=n-1;i>=1;i--)
    {
        syf[i]=syf[i+1]+max(0LL,a[i+1]+1-a[i]);
    }

    long long ans=INF;

    for(long long i=1;i<=n;i++)
    {
        ans=min(ans,max(pr[i],syf[i]));
    }

    cout<<ans<<"\n";
    return 0;
}

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