#include<bits/stdc++.h>
using namespace std;
long long a[10010];
int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0),cout.tie(0);
	long long n,s = 0;
	cin >> n;
	for (long long i = 1 ; i <= n ; i++)
	{
		cin >> a[i];
	}
	sort(a + 1,a + n + 1);
	reverse(a + 1,a + n + 1);
	for (long long i = 1 ; i <= n ; i++)
	{
		s += a[i];
		for (long long j = i ; j <= n ; j++)
		{
			a[j] = (long long)sqrt(a[j]);
		}
	}
	cout << s << '\n';
	return 0;
}
//100^0000^0000