n = int(input('your first number please :'))
z = int(input('your scend number please :'))
class Calc:
    def numbres(self,x = n,y = z):
        self.x = x
        self.y  = y
    def add(self):
        return self.x + self.y
    def sub(self):
        return self.x - self.y
a = Calc()
if __name__ =='__main__':
    a.numbres()
    print(a.add())
    print(a.sub())