Codeforces Round #829 (Div.1, Div.2, based on Moscow Team Olympiad, rated)

Codeforces Round #829 (Div.1, Div.2, based on Moscow Team Olympiad, rated)

By Ormlis, history, 25 hours ago, translation,

Hi everybody,

This Sunday there will be a XX Moscow Team Olympiad, high school students competition based in Moscow that is an elimination contest for All-Russian Team Olympiad. This contest is prepared by Moscow Olympiad Scientific Committee that you may know by Moscow Open Olympiad, Moscow Olympiad for Young Students and Metropolises Olympiad (rounds 327, 342, 345, 376, 401, 433, 441, 466, 469, 507, 516, 541, 545, 567, 583, 594, 622, 626, 657, 680, 704, 707, 727, 751, 775, 802).

The round will be held at Sunday, October 23, 2022 at 07:50UTC and will last for 2 hours. Note the unusual time of the round. Each division will have 6 problems. The round will be held according to the Codeforces rules and will be rated for both divisions.

Problems of this competition were prepared by Tikhon228, teraqqq, Ormlis, sevlll777, Artyom123, vaaven, Mangooste, Siberian, Alexdat2000, TeaTime, Ziware guided by Tikhon228, grphil and Helen Andreeva.

Thanks to DishonoredRighteous and KAN for the round coordination, statement translation, providing and preparation additional problems, and also thanks for MikeMirzayanov for systems Codeforces and Polygon, which was used to prepare problems of this olympiad.

Also thanks to KLPP and TheOneYouWant for providing and preparation an additional problems that helped to create (I hope) a balanced problem set for the round.

Please note that the ratings will not be recalculated until Codeforces Round #830 (Div. 2), and system testing may be delayed until the end of Codeforces Round #830 (Div. 2).

Good luck everybody!

UPD: The round was postponed by 15 minutes. Please note the new start time is Sunday, October 23, 2022 at 07:50UTC.