#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll a[100005];
bool cmp(ll a,ll b)
{
	return a > b;
}
int main()
{
	int n;
	cin >> n;
	for(int i = 1;i <= n;i++)
	{
		cin >> a[i];
	}
	sort(a + 1,a + 1 + n,cmp);
	ll cmp = 0;
	for(int i = 1;i <= n;i++)
	{
		cmp += a[i];
		for(int j = i + 1;j <= n;j++)
		{
			a[j] = sqrt(a[j]);
		}
	}
	cout << cmp;
	return 0;
}