#include<bits/stdc++.h>
using namespace std;
int n,a[1000001],ans;
int main(){
	cin>>n;
	for(int i=1;i<=n;++i) cin>>a[i];
	sort(a+1,a+n+1);
	reverse(a+1,a+n+1);
	for(int i=1;i<=min(5,n);++i){
		ans+=a[i];
		for(int j=i+1;j<=n;++j) a[j]=(int)sqrt(a[j]);
	}
	if(n<5) cout<<ans;
	else cout<<ans+n-5; 
	return 0;
}