A service running in a directory /foo/bar/ stores in /foo/bar/accounts
information about users in the following way:

1) A user logs in with a username and a password
2) The service concat username and password and hash them using the
function [python] below, SUPPOSED TO BE a strong mapping from printable
to printable characters, into the "filename" variable

def weak_hash(s):
    from string import *
    s=upper(s)
    p=printable
    s=[p.find(y) for y in s if not y in whitespace]
    m=min(s)
    b=max(s)-m+1
    n=0
    for i in s :
        n*=b
        n+=(i-m)
    b=min(2*b, len(p))
    s1=""
    while n :
        s1=p[n%b]+s1
        n/=b
    return s1


3) The service overwrites (create if does not exist) the content of [python]
'/foo/bar/accounts/%s'%(filename) with information provided by the user.

You know that the service keeps the administrator password in
/foo/bar/admin-pwd.txt world writable... ...can you change it?
(please note that the admin password is in the parent directory!)

Task:

Submit valid username and password that would cause the service to
overwrite the admin password file. Both username and password should
contain only printable character, that is:

[python]

def test_printable(username,password):
    from string import printable	
    from operator import and_
    reduce(and_, [x in printable for x in username+password] ,True)