#include <bits/stdc++.h>
using namespace std;
int main(){
	int n,x;
	long long ans=0;
	cin>>n;
	vector <int> v;
	for (int i=0;i<n;i++){
		cin>>x;
		v.push_back(x);
	}
	sort(v.begin(),v.end());
	reverse(v.begin(),v.end());
	for (int i=0;i<n;i++){
		ans+=v[i];
		for (int j=i+1;j<n;j++){
			v[j]=int(sqrt(v[j]));
		}
	}
	cout<<ans<<endl;
	return 0;
}