# a = 10
# b = 20
# I want swap a and b, then the result is  a = 20, b= 10
# print out

a = 10
b = 20
temp = a
a = b
b = temp
print("a={} and b={}".format(a,b))


# input a
# input b
# swap a and b
# print out

a = input("enter a:")
b = input("enter b:")
temp = a
a = b
b = temp
print("a={} and b={}".format(a,b))