• The contest materials are copyrighted. We are offering them publicly for the community to enjoy, for personal use only.
  • You are welcome to publish full solutions after the deadline, but please use proper attributions and link back. Proper attribution includes the name of all authors and a link to the original text on this site.
  • Contest materials may not be used for any commercial purposes whatsoever, including marketing, without explicit written permission. If you are interested in using the contest materials for purposes besides your own personal use, please ask first.