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

int a[100001];

int main()
{
	int n;
	cin >> n;
	for (int i = 1;i <= n;i ++)
	{
		cin >> a[i];
	}
	sort(a + 1,a + n + 1);
	long long sum = 0;
	for (int i = n;i >= 1;i --)
	{
		sum += a[i];
		for (int j = i - 1;j >= 1;j --)
		{
			a[j] = (int)(sqrt(a[j]));
		}
	}
	cout << sum;
    return 0;
}