Submission #553559

#	Time	Username	Problem	Language	Result	Execution time	Memory
553559		andrei_boaca	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	28 ms	8652 KiB

Main

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
ll n,v[200005],ans=1e18,a[200005],toneg[200005],topos[200005];
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n;
    for(int i=1;i<=n;i++)
        cin>>a[i];
    n++;
    for(int i=1;i<=n;i++)
        v[i]=a[i]-a[i-1];
    for(int i=n;i>=1;i--)
    {
        toneg[i]=toneg[i+1];
        if(v[i]>=0)
            toneg[i]+=v[i]+1;
    }
    for(int i=1;i<=n;i++)
    {
        topos[i]=topos[i-1];
        if(v[i]<=0)
            topos[i]+=abs(v[i])+1;
    }
    for(int i=1;i<n;i++)
    {
        ll val=max(topos[i],toneg[i+1]);
        ans=min(ans,val);
    }
    cout<<ans;
    return 0;
}

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