I am pleased to announce that Codeforces Round #304 (Div.2), of which I am the author, will take place today. This will be my first round, so I hope that it will be cool and interesting. Traditionally Div.1 participants can take part out of the competition.
I want to thank znirzejskwarka, Dakurels and Zlobober for help with preparing the problems, thank Delinur for translating the problems, and thank to MikeMirzayanov and all who created polygon for this great system.
I wish you all good luck!
UPD Scoring will be 500-1000-1250-1500-2250.
UPD Congratulations for winners in div.2:
And in div.1: