#include<bits/stdc++.h>
using namespace std;
int n,sum;
vector<int> v;
int main(){
	cin>>n;
	for(int i = 0;i<n;i++){
		int x;cin>>x;
		v.push_back(x);
	}
	sort(v.rbegin(),v.rend());
	for(int i = 0;i<v.size();i++){
		sum+=v[i];v[i] = 0;
		for(int j = i+1;j<n;j++){
			v[j] = (int)sqrt(v[j]);
		}
	}
	cout<<sum;
	return 0;
}