#include <bits/stdc++.h>
using namespace std;
int x[333333] = {};
long long ans = 0;
int main () {
	int n; cin >> n;
	for (int i = 1; i <= n; i++) cin >> x[i];
	sort (x+1, x+n+1, greater<int>());
	for (int i = 1; i <= n; i++) {
		ans += x[i];
		for (int j = 1; j <= n; j++) x[j] = (int)sqrt(x[j]);
	}
	cout << ans << endl;
	return 0;
}