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

int f(int a,int b)
{
	return a>b;
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	ll n,s=0,x=1;
	cin>>n;
	ll a[n+1];
	for(int i=1;i<=n;++i)
	{
		cin>>a[i];
	}
	int t=n+1;
	if(n>=2) stable_sort(a,a+t,f);
	int y;
	for(int i=1;i<=n;++i)
	{
		s+=a[x];
		for(int j=i;j<=n;++j)
	    {
		    a[j]=(int)sqrt(a[j]);
	    }
	    x++;
	}
	cout<<s<<endl;
	return 0;
}