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
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: