#include<bits/stdc++.h>

#define int long long

using namespace std;

int a[100005];

signed main() {
	int n;
	scanf("%lld", &n);
	for (int i = 0; i < n; i++) scanf("%lld", a + i);
	sort(a, a + n, greater<int>());
	int ans = 0;
	for (int i = 0; i < min(n, 10ll); i++) {
		for (int j = 0; j < i; j++) a[i] = sqrt(a[i]);
		ans += a[i];
	}
	cout << ans;
}