#!/usr/bin/python

from hashlib import md5
from getpass import getpass
from os import popen

s='0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZZZ'

site=raw_input('Site: ')
y=getpass()
z=getpass()
if z!='' and y != z:
        print "NOT EQUAL!"
        exit(1)
p="".join([s[ord(x)>>2] for x in md5(site+md5(y).hexdigest()).digest()[:8]])
print p