print "program to swap two values in variables without \n using 3rd variable"


a = raw_input("Enter an interger number:")

b = raw_input("Enter an interger number:")
print " a = %d \n b = %d " %(a,b)

a= a+b

b = a-b

a = a-b

print """ After swap
a = %d \n b = %d """ ,(a,b)