Reference
Google Code Jam 2006http://www.google.com/codejam/
Programming Contests, Software Development, and Employment Services at TopCoder
http://www.topcoder.com/
via
Google Japan Blog - 2006-08-25 - Google Code Jam に参加してみませんか?http://googlejapan.blogspot.com/2006/08/google-code-jam.html