Hello, Codeforces!

dannyboy20031204 and I are glad to invite everyone to participate in Codeforces Round 772 (Div. 2), which will be held on 20.02.2022 17:35 (Московское время). This Round will be rated for participants with rating lower than 2100. You will have 2 hours to solve 6 problems.

We would like to thank:

• 74TrAkToR for excellent coordination of the round and translating the statements.
• 244mhq, generic_placeholder_name, null_awe, ptd, Fysty, 8e7, yungyao, Devil, amano_hina, Dragonado, DIvanCode, voventa, plagues, Marslai24, FHVirus, saarang, olyazyryanova, marzipan, Prokhor08, sam571128, efimovpaul, ColtenOuO, zarubin, sus for testing this round and providing very useful feedback.
• generic_placeholder_name for providing an awesome problem idea when our problems are rejected by the coordinator.
• 8e7 for verifying our statements and tutorials, correcting many mistakes and making it easier to read.
• MikeMirzayanov for great Codeforces and Polygon platforms.

Score distribution: $$$500 - 1000 - 1500 - 2250 - 2250 - 3000$$$

I hope all of you will enjoy the problems and have a positive delta. GL & HF ^^.

UPD1: Thanks for your participation! Editorial is out.