#include<bits/stdc++.h>
using namespace std;
bool cmp(int x,int y)
{
	return x>y;
}
int main()
{
	int a,s=0;
	cin>>a;
	int d[a+2];
	bool dl[a+2];
	for (int i=1;i<=a;i++)
	{
		cin>>d[i];
	} 
	sort(d+1,d+a+1,cmp);
	int cnt=0;
	for (int i=1;i<=a;i++)
	{
		s+=d[i];
		for (int j=i+1;j<=a;j++)
		{
			d[j]=int(sqrt(d[j]));
		} 
	}
	cout<<s;
}