# your code goes here
class A:
	def __init__(self,a,size):
		self.data=a
		self.size=size

	def check_names(self):
		return all(self.data.columns==names)

class AA:
	def __init__(self,a1,a2,size):
		self.a1=A(a1,size)
		self.a2=A(a2,size)

	def check(self):
		return self.a1.check_names() and self.a2.check_names()


# newAA=AA(a1,a2,10)
# newAA.check()