def add (x, y):
    return x+y
def subract (x, y):
	return x-y
def multiply (x, y):
    return x*y
def divide (x, y):
    return x/y
print("select the options")
print("1.add")
print("2.subract")
print("3.multiply")
print("4.divide")
choice =(input("enter the choice(1,2,3,4):"))
num1=int(input("enter the first number"))
num2=int(input("enter the secound number"))
if choice=='1':
   print(num1,"+",num2,"=",add(num1,num2))
elif choice=='2':
   print(num1,"-",num2,"=",subract(num1,num2))
elif choice=='3':
   print(num1,"*",num2,"=",multiply(num1,num2))
elif choice=='4':
   print(num1,"/",num2,"=",divide(num1,num2))
else:
	print("invalid input")
