The September Contest has ended!

Editorials can be found here.

All solutions have been made visible and all problems have been transferred to the practice section.

Winners Blog is now up, open for your viewing here.

Rules:

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 ok. In case you notice any malpractice or cheating during any contest please email us at feedback@codechef.com

Contest problems will become visible on September 1st 2011 at 15:00 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 min/max tie breaker problem, where the best solution will receive one point and all other solutions will receive a fraction based how close they come to the best solution.