#include<bits/stdc++.h>
using namespace std;
int n,m,k,a[100010];
signed main(){
	cin >> n;
	for(int i = 1;i <= n;i ++){
		cin >> a[i];
	}
	sort(a + 1,a + 1 + n);
	int cnt = a[n];
	for(int i = n - 1;i > 0;i --){
		for(int j = 1;j <= n - i;j ++){
			a[i] = (int)sqrt(a[i]);
		}
		cnt += a[i];
	}
	cout << cnt;
	return 0;
}