class Queue:
	def __init__(self):
		self.items=[]
	def isEmpty(self):
		return self.items == []
	def enqueue(self):
		self.items.insert(0,item)
	def dequeue(self):
		self.items.pop()
	def size(self):
		return len(self.item)
	def __str__(self):
		return str(self.items)


