Hello, Codeforces!

I am pleased to invite you to participate in Codeforces Round 899 (Div. 2), which will be held on Sep/25/2023 17:35 (Moscow time). This round will be rated for participants with a rating lower than 2100.

All problems were written and prepared by me.

You will be given 5 problems, one of which is divided into two subtasks, and you will have 2 hours and 15 minutes to solve them.

I would like to thank:

• irkstepanov for excellent coordination!

• Golovanov399 for providing useful feedbacks.

• kizen for helping me much with one problem of the contest.

• ko_osaga for Nutella testing.

• leinad2, Numbering, qwerasdfzxcl, kizen, Golovanov399 for Red testing.

• Kaling, Mingyu331, chaeyihwan, Kawaii2DIdolOfGSHS, azberjibiou, mjhmjh1104, DELTARUNE, wuhudsm for Orange testing.

• unordered_map, alex0211, gs20036, namolbbaemi, eeeDA, nlog for Purple testing.

• andyandy, JaewonOh, kongum, Coruncanius, ez_code, fs_edge, chromate00 for Blue testing.

• Hanlana18, papergundam, sjmjys954646 for Grey testing.

• MikeMirzayanov for great Polygon and Codeforces platforms!

Score distribution will be announced later.

Good luck and enjoy the round!