From: Joe Cheng <code@...>
Date: 2004-10-04T00:29:57+09:00
Subject: Re: [SOLUTION] Secret Santas (#2)

> Note to other submitters, the following is a good edge case to test:
> 
> Luke1 Skywalker <luke@theforce.net>
> Luke2 Skywalker <luke@theforce.net>
> Luke3 Skywalker <luke@theforce.net>
> Luke4 Skywalker <luke@theforce.net>
> Leia Skywalker <leia@therebellion.org>
> Toula Portokalos <toula@manhunter.org>
> Gus Portokalos <gus@weareallfruit.net>
> Bruce Wayne <bruce@imbatman.com>
> Virgil Brigman <virgil@rigworkersunion.org>

I thought it might be a good idea for me to explain exactly what is 
interesting about this test case.  There are 5 Skywalkers and 4 
non-Skywalkers.  So the moment a non-Skywalker is assigned to another 
non-Skywalker, a solution is impossible.

(Gavin, your solution warned me that the input contained duplicate 
e-mails... nice!)