Hi, Codeforces!
I'm glad to invite you to take part in Codeforces Round 917, which will take place on Dec/24/2023 17:35 (Moscow time). Round will be rated for participants with rating less than $$$2100$$$. Participants from the first division can take part out of competition.
There will be $$$6$$$ problems for $$$2$$$ hours. The problems are authored by IgorI, zidder and me.
Part of the problems in this round were in the Yerevan SU 28.1₀.₂₀₂3 Contest. If you participated in it or know at least one problem from it, please refrain from participating in this round.
We would like to thank
- Thanks to TheScrasse for excellent round coordination;
- Thanks to our testers: KAN, S_Voloch, Tmitmi, Pagode_Paiva, hgglmao, IceWolf898, daud04, dewana310, menborong, -dub-otrezkov-, rtckyw_, Bebo, Starswap, MCuong, line, shamir0xe, Adrisos, AbduSaber, pwned, TamimEhsan, Andreasyan, priyanshu.p, kzyKT, Lyde, mcdx9524, mihneacazan, PurpleCrayon, errorgorn, fishy15, maomao90, okwedook, higz, Akash., Kapt for giving valuable feedback for problems;
- Thanks to MikeMirzayanov for creating Codeforces and Polygon.
Scoring distribution: $$$500 - 1000 - 1500 - 2250 - 2500 - 3000$$$
We hope you'll like the problemset! Good luck and have fun!
UPD 1: Editorial
UPD 2: Congrats to our winners:
- Div1 + Div2
- Div2