''' Purpose: introduce variable reassignment
                       ----
'''

nbr_rabbits = 2         # first generation

print( 'Number of rabbits:', nbr_rabbits )

input()

nbr_rabbits = 4         # next generation

print( 'Number of rabbits:', nbr_rabbits )

input()

nbr_rabbits = 8         # next generation

print( 'Number of rabbits:', nbr_rabbits )

input()

nbr_rabbits = 16        # next generation

print( 'Number of rabbits:', nbr_rabbits )

input()

nbr_rabbits = 32        # next generation

print( 'Number of rabbits:', nbr_rabbits )