#include <bits/stdc++.h>
using namespace std;
int a[105];
int main()
{
	int n;
	cin >> n;
	int js = 0;
	for (int i = 1;i <= n;i++) cin >> a[i]; 
	for (int i = 1;i <= n - 1;i++)
		for (int j = 1;j <= n - i;j++)
			if (a[j] < a[j + 1])
				swap(a[j],a[j + 1]);
	for (int i = 1;i <= n;i++)
	{
		js += a[i]; 
		for (int j = i + 1;j <= n;j++)
		{
			a[j] = sqrt(a[j]);
		}
	}
	cout << js << endl;
	return 0;
}