#include <bits/stdc++.h>
using namespace std;
const int M=1e5+10;
int n;
int yum[M];
long long ans;
int make(int times,int num)
{
	for(int i=1;i<=times;++i) num=sqrt(num);
	return num;
}
int main()
{
	cin>>n;
	for(int i=0;i<n;++i) cin>>yum[i];
	sort(yum,yum+n,greater<int>());
	for(int i=0;i<n;++i) ans+=(long long)make(i,yum[i]);
	cout<<ans<<endl;
	return 0;
}