Hello, Codeforces!

This Saturday VIII Lipetsk Team Olympiad, a competition for high school students from all over the country, will be held in Lipetsk. Maybe you participated in previous Codeforces rounds based on our problems (rounds 643 and 791).

The round will start at Apr/15/2023 12:05 (Moscow time) and will last for 2 hours. Please notice the unusual time. Each division will have 6 problems. The round will be held according to the Codeforces rules and will be rated for both divisions.

Problems were proposed and prepared by Um_nik, DishonoredRighteous, FairyWinx, golikovnik, teraqqq, grphil, Kon567889, TeaTime, Tikhon228 and dshindov.

I would like to thank Artyom123 for great round coordination and our testers: Ormlis, bashkort, iakovlev.zakhar, Mangooste, Siberian, SomethingNew, stepanov.aa, talant, Aaeria, Alexdat2000, qxforever, Renatyss, Renedyn, sevlll777, valerikk, Tiagodfs, ezraft, Gornak40, kbats183, Nathan_McKane, nik_sn, Nitelike, Tilt, ak2006, KiruxaLight, 9kin.

Of course, I would like to thank all Codeforces team for this beautiful platform!

Scoring distribution will be announced later.

I hope you will enjoy our problems. Wish you good luck and high rating!