#include<bits/stdc++.h>
using namespace std;
long long a[100001],h;
bool cmp (int a,int b)
{
	return a > b;
}
int main(){
	int n;
	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 ++)
	{
		h += a[i];
		for (int j = i + 1; j <= n; j ++)
		{
			a[j] = sqrt(a[j]);
		}
	}
	cout << h;
	return 0;
}