# max3.py
# From Zelle p222
#

def max3(x,y,z):

# set the default
  max = x

# Overwrite as needed
  if y > max:
    max = y
  if z > max:
    max = z

# return the max
  return max

def main():
  x,y,z = input("Give me 3 numbers, eg 3,6,9: ")
  print "The max is: ", max(x,y,z)


main()