class Count:
def __init__(self,a,b):
self.a=int(a)
self.b=int(b)
def add(self):
return self.a+self.b
def sub(self):
return self.a-self.b
class Count:
def __init__(self,a,b):
self.a=int(a)
self.b=int(b)
def add(self):
return self.a+self.b
def sub(self):
return self.a-self.b