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