#include<bits/stdc++.h>
using namespace std;
int fruit[100005];
int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int day=1;
	int n,cnt=0;
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>fruit[i];
	}
	sort(fruit+1,fruit+n+1);
	while(day!=n+1)
	{
		cnt+=fruit[n-day+1];
		for(int i=1;i<=n-day;i++)
			fruit[i]=floor(sqrt(fruit[i]));
		day++;
	}
	cout<<cnt;
	return 0;
}