The December Contest has ended!
Editorials on each problem can be found here.
All problems have been added to the practice section.
Solutions are public for all problems.
And do not forget to read the Winners Blog here.
In case you are a new user, you will need to first register for a CodeChef ID here.
Please do not discuss strategy, suggestions or tips in the comments during a live contest. Posting questions clarifying the problem statement is okay. In case you notice any malpractice or cheating during any contest please email us at firstname.lastname@example.org
Contest problems will become visible on December 1st, 2011 at 1500 hours IST.
You will receive one point for solving a problem (passing all test cases - no partial credit), regardless of the level of difficulty of that problem.
You can submit solutions as many times as you'd like, there are no penalties for incorrect submissions.
Each contest will have one tie-breaker problem, where the best solution will receive one point and all other solutions will receive a fraction based on how close they come to the best solution.
December 3rd, 04:30pm: The example inputs for the problem CHEFGIFT has been modified a bit.