#include<bits/stdc++.h>
using namespace std;
int a[100010],c = 1,s;
int main()
{
	int n;
	cin >> n;
	for( int i = 1; i <= n; i++ )
	{
		cin >> a[i];
	} 
	sort(a + 1,a + n + 1);
	for( int i = n; i >= 1; i-- ) 
	{
		s += a[i];
		for( int j = i - 1; j >= 1; j-- )
		{
			a[j] = sqrt(a[j]);
		}
	} 
	cout << s;
	return 0;
}