n1=int (input("Enter the first number "))
n2=int (input("Enter the second number "))
print ("number n1 before swapping", n1)
print ("number n2 before swapping", n2)
temp=n1
n1=n2
n2=temp
print ("number n1 after swapping", n1)
print ("number n2 after swapping", n2)