You will be given 8 problems and 3 hours to solve them. One of the problems is divided into two subtasks. The scoring distribution will be:
$$$500$$$ — $$$1000$$$ — $$$1250$$$ — $$$1500$$$ — $$$2000$$$ — $$$(2000+1000)$$$ — $$$3500$$$ — $$$4000$$$
All problems are written and prepared by me. I would like to thank:
- irkstepanov for carefully coordinating the round.
- MikeMirzayanov for the wonderful Polygon and Codeforces platforms.
- 4fecta, ak2006, amethyst0, AndreySergunin, BalintR, ChrisT, Div1D4Life, dorijanlendvaj, Dormi, errorgorn, Golovanov399, IndignantHydra, jonatas57, kzyKT, lexiyvv, liouzhou_101, Maksim1744, maximrufed, mc._cari, MvKaio, NoDesire, polosatic, RedstoneGamer22, skittles1412, tibinyte, valeriu for testing the round and providing valuable feedback.
I look forward to your participation and hope you enjoy the problems. Good luck!
UPD 1: Editorial
UPD 2: Congratulations to the winners!