#include <bits/stdc++.h>
using namespace std;
#define int long long
const int maxn = 1e5 + 5;
int n, ans;
int a[maxn];

bool cmp(int a, int b)
{
	return a > b;
}

signed 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++){
		ans += a[i];
		for (int j = i + 1; j <= n; j++)
			a[j] = (int)sqrt(a[j]);
	}
	cout << ans << endl;
	
	return 0;	
}