I'd like to invite you to participate in a 2-hours Div2 round which will be held this Saturday, August 30th at 11:30 AM MSK. Div1 coders can take part out of competition, as usual. The problems were prepared by me and MirceaFF (B and C). I'd like to thank Gerald for helping preparation, MirceaFF for english translation and MikeMirzayanov for the Codeforces system.
The main characters of this round will be Caisa and Gargari,which have some interesting tasks for you. I hope you will enjoy the round. Good luck and have fun!
UPD: It will be used a standard scoring.
Here are the winners:
Stats about hacks can be found here.
Editorial is here.