#include<bits/stdc++.h>
using namespace std;
#define int long long
int n,a[100005],ans;
bool cmp(int a,int b)
{
	return a>b;
}
signed main()
{
    cin>>n;
    for(int i=1;i<=n;i++)   cin>>a[i];
    sort(a+1,a+n+1,cmp);
    for(int i=1;i<=n;i++)
    {
    	int j=i-1;
    	while(j!=0)
		{
			a[i]=sqrt(a[i]);
			j--;
		}
    	ans+=a[i];
	}
	cout<<ans;
    return 0;
}