#include <iostream>
#include <cmath>
#include <algorithm>
using namespace std;
#define int long long
int n,l[100001],sum;
signed main(){
	cin>>n;
	for(int i=1;i<=n;i++)cin>>l[i];
	sort(l+1,l+n+1);
	reverse(l+1,l+n+1);
	for(int i=1;i<=n;i++){
		int x=l[i];
		for(int j=1;j<i;j++)x=(int)sqrt(x);
		sum+=x;
	}
	cout<<sum;
	return 0;
}