#include<iostream>
#include<cmath>
#include<algorithm>
using namespace std;
int A[100010];
int cmp(int a,int b){
	return a>b;
}
int main(){
	int n;
	cin>>n;
	for (int i=1;i<=n;i++){
		cin>>A[i];
	}
	int ans=0;
	sort(A+1,A+1+n,cmp);
	for (int i=1;i<=n;i++){
		ans+=A[i];
		for (int j=i+1;j<=n;j++){
			A[j]=sqrt(A[j]);
		}
	}
	cout<<ans;
	
	return 0;
}