Submission #523311

#	Time	Username	Problem	Language	Result	Execution time	Memory
523311		lucri	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++17	100 / 100	82 ms	6980 KiB

Main

#include <iostream>
using namespace std;
long long n,a[200010],st[200010],dr[200010],ans=100000000000000000;
int main()
{
    cin>>n;
    for(int i=1;i<=n;++i)
    {
        cin>>a[i];
        st[i]=st[i-1];
        if(a[i-1]>=a[i])
            st[i]+=a[i-1]-a[i]+1;
    }
    for(int i=n;i>=1;--i)
    {
        dr[i]=dr[i+1];
        if(a[i+1]>=a[i])
            dr[i]+=a[i+1]-a[i]+1;
    }
    for(int i=1;i<=n;++i)
        ans=min(ans,max(st[i],dr[i]));
    cout<<ans;
    return 0;
}

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