#!/usr/bin/env python
#
# Find the maximal even number
# MyName@My.Mail.box -- Today
#

import sys

# M will hold the maximum even number
M = None # no even number yet

i = 1
while "i is smaller than the length of sys.argv":
    n = int(sys.argv[i]) # Next number 
    if "n is an even number":
        if M == None or M < n:
            M = n
    i = i + 1

if M == None:
    sys.stdout.write("No even number\n")
else:
    sys.stdout.write("Maximal even: %d\n" % M)
sys.exit(0)