I am Ciprian Olariu (scipianus) from Romania and this is my first round on Codeforces. It is more special as it is held right after I became red on Codeforces. I would like to thank Maxim Akhmedov (Zlobober) and Gerald Agapov (Gerald) for helping me to prepare this round, Delinur for translating the statements and also MikeMirzayanov for Codeforces and Polygon platform.
In this round the main characters will be Mole and Marmot, two good friends, and you will help them in their activites.
Please note that this round will have an experimental duration of 2.5 hours and 6 problems. The scoring will be 500-1000-1500-2000-3000-3000.
I hope you will enjoy the round. Good luck and have fun :)
UPD : To avoid overlapping Topcoder SRM #635 and Bayan 2015 Contest Warm Up, we decided to move round to Monday 19:30 MSK
UPD 2 : The editorial was published here
UPD 3 : Round has finished. Thanks for participating. Congratulations to the winners: