The January 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.
Please do not discuss strategy, suggestions or tips in the comments during a live contest. Posting questions clarifying the problem statement is ok. If you are unsure, email us at email@example.com
Contest problems will become visible on January 1st 2012 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.