Stack.push(el) = {
	buff = Queue()
	buff.push(el)

	while(!q.empty())
		buff.push(q.pop())

	q = buff
}

Stack.pop = q.pop()

Stack.top = q.front()

Stack.max = {
	buff = Queue()
	max_el = null

	while(not q.empty()) {
		el = q.pop()
		if(max_el is null or max_el < el)
			max_el = el
		buff.push(el)
	}

	q = buff
}