#include <bits/stdc++.h>
using namespace std;
int main() {
	int n;
	cin>>n;
	vector<int> a;
	for (int i=0;i<n;i++){
		int b;
		cin>>b;
		a.push_back(b);
	}
	sort(a.rbegin(),a.rend());
	int ans=0;
	for (int i=0;i<n;i++){
		if (i>3){
			ans++;
		}
		else{
			for (int j=0;j<i;j++){
				a[i]=int(sqrt(a[i]));
			}
			ans+=a[i];
		}
	}
	cout<<ans;
	return 0;
}