public int GetMin()
{
	int max = GetMax();
	while(!IsEmpty())
		RemoveFromSet(max);
	return max;
}

public bool Equals(SetOfNumbers other)
{
	while(!IsEmpty() || !other.IsEmpty())
	{
		if(IsEmpty() || other.IsEmpty()) return false;
		int a = GetMax();
		int b = other.GetMax();
		RemoveFromSet(a);
		other.RemoveFromSet(b);
		if(a != b) return false;
	}
	return true;
}

public static SetOfNumbers Make(SetOfNumbers sn)
{
	SetOfNumbers temp = new SetOfNumbers();
	SetOfNumbers evens = new SetOfNumbers();
	while(!sn.IsEmpty())
	{
		int max = sn.GetMax();
		sn.RemoveFromSet(max);
		temp.AddToSet(max);
		if(max % 2 == 0) evens.AddToSet(max);
	}
	while(!temp.IsEmpty())
	{
		int max = temp.GetMax();
		temp.RemoveFromSet(max);
		sn.AddToSet(max);
	}
	return evens;
}