#include <bits/stdc++.h>
#define int long long
#define rep(i,a,b) for(int i=a;i<b;i++)
using namespace std;
int n,a[100005],ans;
signed main(){
	cin>>n;
	rep(i,0,n){
		cin>>a[i];
	}
	sort(a,a+n);
	reverse(a,a+n);
	rep(i,0,n){
		if(i>=10)ans++;
		else{
			rep(j,0,i){
				int l=0,r=a[i];
				while(l<r){
					int mid=(l+r+1)/2;
					if(mid*mid>a[i])r=mid-1;
					else l=mid;
				}
				a[i]=l;
			}
			ans+=a[i];
		}
	}
	cout<<ans;
	return 0;
}