#include <bits/stdc++.h>
using namespace std;
int a[100005];
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int n,sum = 0; cin>>n;
	for(int i=1;i<=n;++i) cin>>a[i];
	sort(a+1,a+n+1);
	while(n>0) {
		sum += a[n];
		n--;
		for(int i=1;i<=n;++i) a[i] = (int)sqrt(a[i]);
	}
	cout<<sum;
	return 0;
}