#include <bits/stdc++.h>
using namespace std;

int a[100005];

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

int main()
{
	int n;
	scanf("%d", &n);
	for (int i = 1; i <= n; i++)
		scanf("%d", &a[i]);
	sort(a + 1, a + n + 1, cmp);
	long long ans = 0;
	for (int i = 1; i <= n; i++)
	{
		ans += a[i];
		for (int j = 1; j <= n; j++)
		{
			if (j == i) continue;
			a[j] = (int)sqrt(a[j]);
		}
	}
	printf("%lld\n", ans);
	return 0;
}