#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
ll x[114514],ans;
signed main(){
	//freopen("xxx.in","r",stdin);
	//freopen("xxx.out","w",stdout);
	ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	ll n;cin>>n;
	for(ll i=1;i<=n;i++)cin>>x[i];
	sort(x+1,x+n+1);
	for(ll i=n;i;i--){
		if(n-i>=5)ans++;
		else {
			ll t=x[i];
			for(ll k=i;k<n;k++)t=(int)sqrt(t);
			ans+=t;
		}
	}
	cout<<ans;
	return 0;
}