Codeforces round #385 will take place at the unusual usual time of Saturday, 17 December 19:35 MSK.
Thanks to the following people for making this round possible.
- LiChenKoh, xiaowuc1 for helping develop problems and discussing ideas with me.
- winger, AlexFetisov for testing the problems
- GlebsHP for all his valuable help with the round.
- MikeMirzayanov for the great Codeforces and Polygon platforms.
As usual, contestants will have 2 hours to solve 5 problems. Hope you will enjoy the problems!
Scoring will be announced closer before the round.
EDIT: It may be helpful to read the Interactive Problem Guide before the round for both divisions.
EDIT 2: The scoring distribution will be unusual:
EDIT 3: While you wait for system testing, here is a quick editorial: http://codeforces.com/blog/entry/49126
EDIT 4: Congratulations to the winners!