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