#include <bits/stdc++.h>
using namespace std;

int n,a[100007],s;

bool cmp(int a,int b){
	return a > b;
}

int main(){
	ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	//Do not need freopen;
	cin >> n;
	for (int i = 1;i <= n;i++){
		cin >> a[i];
	}
	sort(a + 1,a + 1 + n,cmp);
	s = 0;
	for (int i = 1;i <= n;i++){
		s += a[i];
		if (i != n){
		    for (int j = 1;j <= i;j++)a[i + 1] = (int)sqrt(a[i + 1]);
		}
	}cout << s << endl;
	return 0;
}