a =int(input("Enter the first number:"))
b =int(input("Enter the second number:"))
operation =int(input("enter the number from 1-5(1for +,2 for -,3 for *,4for /):"))
if operation == 1 :
     print(a+b)
elif operation == 2 :
     print(a-b)
  
elif operation == 3 :
     print(a*b)
     
elif operation == 4 :
    print(a/b)
else:
    print("Invalid input")

