class Operation:
def Sum(self,n1,n2):
SumResult=n1+n2
print("Sum=",SumResult)
def Sub(self,n1,n2):
SubResult=n1-n2
print("Sub=",SubResult)
class OperationWithMul(Operation):
def Mul(self,n1,n2):
MulResult=n1*n2
print("Mul=",MulResult)
def Sub(self,n1,n2):
super().Sub(n1,n2)
#SubResult=n1-n2+5
#print("Sub=",SubResult)
def main():
#OP=Operation()
#OP.Sub(4,2)
#OP.Sum(10,15)
OpMul=OperationWithMul();
OpMul.Sub(4,2)
OpMul.Sum(10,15)
OpMul.Mul(10,2)
if __name__ == '__main__':main()