There will be 6 problems, and you will have 2.5 hours to solve them. All the problems are written and prepared by me.
Huge thank you to everyone who made this round possible:
adedalic for awesome coordination, guidance, advice, and more <3
dragonslayerintraining for extensive testing, feedback, and buffing tests
pikmike, walnutwaldo20, Benq, hocky, Geothermal, isaf27, McDic, bfs.07, iankury, songsinger, Agnimandur, dcshin, chrome, Rods, brian, and HAEtaRhoEta for taking the time to test and provide invaluable advice
MikeMirzayanov for wonderful platforms Codeforces and Polygon (preparing problems on Polygon is fun!)
You, for participating!
I hope everyone will enjoy the problems! I have tried to make short statements and strong pretests. Hopefully this contest will be even better than my previous one :)
UPD: Thanks also to darnley for proofreading statements and suggestions!
UPD: The scoring distribution is standard: 500 — 1000 — 1500 — 2000 — 2500 — 3000
UPD: Editorial is here
UPD: Congratulations to the winners! I hope most of you enjoyed the round. If you have any questions, feel free to ask in the comments.
Div 2. Winners: