Preliminary, changes to come possibly.

Howdy Codeforces!

Come join us for a trip to Bovinia with everyone’s favorite munchkin Kevin Sun (ksun48) and his sidekick Nicky Sun (nsun48)! Codeforces Round #334 (for both divisions) will be taking place on December 1st, at 6:35pm MSK. The problems were written by Alex Wei (yummy), Michael Kural (pi37), and myself, Yang Liu. As proud Americans, we’ve themed all of our statements around the most glorious cow (and its many uses in life).

We are immensely grateful to GlebsHP for his guidance and suggestions, without whom we would not have a balanced problem set. In addition, we would like to thank MikeMirzayanov for creating Codeforces and Polygon, as well as Delinur for translating our problem statements to Russian. Finally, we would like to give a huge shoutout to Daniel Chiu (waterfalls), Kevin Sun (ksun48), Nicky Sun (nsun48), Weihang (Frank) Fan (pobelter), Ray Li (abacadaea), and Girishvar Venkat (numbertheorist17) for testing our problems and providing feedback.

We wish you good luck and hope you enjoy our problems and cow jokes. (We’ve milked our brains quite thoroughly for puns.) Come hop on the next cattlebruiser for Bovinia!

(Per Codeforces tradition, we will announce the score distribution just before the contest.)

UPD 1: Some added thanks to AlexFetisov and winger for also testing our problems.

UPD 2: The scoring will be standard (500-1000-1500-2000-2500) for Div 2 and 500-1000-1500-2000-3000 for Div 1. Good luck and have fun!

UPD 3: System testing is done! Congrats to the winners.

Division 1:

1. subscriber
2. rng_58
3. Zlobober
4. ecnerwala
5. FreeMoneyCity

Division 2:

1. matipau
2. geniucos
3. quasisphere
4. emppu
5. tranquility

UPD 4: The editorial is posted here.

Hope everyone enjoyed the contest! Comments about problem quality, etc. are also appreciated.