Hello, everyone! Codeforces Round #292 will be held at Feb/17/2015 19:30 MSK. We're looking forward to your participation!
The problems are from dreamoon, and thanks Shik for some discussion. Also we want to thank Zlobober for helping me prepare the round, AlexFetisov and winger for testing this round , delinur for translating the statement into Russian, and MikeMirzayanov for Codeforces and Polygon.
This is first time I provide all problems for a Codeforces round. I hope you'll find it interesting! Please read all problem statements and discover what the main character drazil do in those problems for he's really cute =)
Finally, I would like to ask sorry_dreamoon to participate this round. I believe everyone have the same curiosity as me about your behavior in Dreamoon's round =) May I have the honor of inviting you?
Update1 : Because problems of this round are hard to determine their difficulty, We will use Dynamic score for this round. Then the order of problems is from easy to hard by sense of me and testers.
Update2 : Due to technical reasons we have to move round on five minutes.
Update3 : Congratulation to our winners:
Also, special congrats on rng_58, who solved problem E in Div.1, which anyone else could not solve.
Between them, EarthQuito is the only person who solve all problems!
Update4 : link to editorial