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

Revision en13, by Ormlis, 2022-10-24 16:58:25

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 Oct/23/2022 10:50 (Moscow time) 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!

UPD1: The round was postponed by 15 minutes. Please note the new start time is Oct/23/2022 10:50 (Moscow time).

UPD2: Great thanks to the testers: Um_nik, dorijanlendvaj, errorgorn, vertig1, Makcum888, iakovlev.zakhar, Kon567889, I_love_geom, golikovnik, mejiamejia, Aleks5d, ak2006, jampm, IgorI! As well as the teams testing the main Olympiad: Elderly Passion Fruit (Siberian, alexxela12345, talant) and (maximrufed, omega_alpha, All1gator).

UPD3: Scoring distribution:

Div.2: 500 — 1000 — (750 — 750) — 1250 — 2000 — 2250

Div.1: (500 — 500) — 750 — 1750 — 2000 — 2500 — 3000

UPD4: Winners!

Div. 1:

  1. jiangly
  2. Rebelz
  3. heno239
  4. Radewoosh
  5. LJC00118

Div. 2:

  1. kzyKT
  2. Vitinha
  3. qtpk
  4. Sugar0612
  5. bdl

UPD5: Editorial

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en13 English Ormlis 2022-10-24 16:58:25 24
ru15 Russian Ormlis 2022-10-24 16:53:23 22
ru14 Russian Ormlis 2022-10-23 17:17:58 424
en12 English Ormlis 2022-10-23 17:17:08 425
ru13 Russian Ormlis 2022-10-23 10:09:36 254
en11 English Ormlis 2022-10-23 10:08:35 258 Tiny change: '2-10-23]! As well as' -> '2-10-23]! \n\nAs well as'
en10 English Ormlis 2022-10-23 10:01:11 673
ru12 Russian Ormlis 2022-10-23 09:57:28 663 Мелкая правка: '[user:Igorl]' -> '[user:IgorI]'
en9 English Ormlis 2022-10-23 00:52:36 4 Tiny change: 'tponed by 20 minutes. ' -> 'tponed by 15 minutes. '
ru11 Russian Ormlis 2022-10-23 00:52:09 4 Мелкая правка: 'енесен на 20 минут. **' -> 'енесен на 15 минут. **'
ru10 Russian Ormlis 2022-10-22 21:09:04 0 (опубликовано)
en8 English Ormlis 2022-10-22 21:08:03 0 (published)
en7 English Ormlis 2022-10-22 21:07:51 110 (saved to drafts)
ru9 Russian Ormlis 2022-10-22 21:06:33 110 (сохранено в черновиках)
en6 English Ormlis 2022-10-22 03:53:21 0 (published)
ru8 Russian Ormlis 2022-10-22 03:52:50 0 (опубликовано)
en5 English Ormlis 2022-10-22 03:46:50 16 Tiny change: 'oviding an additi' -> 'oviding and preparation an additi'
ru7 Russian Ormlis 2022-10-22 01:36:02 6 Мелкая правка: 'еевой Еленой Владимировной.\n\nСпаси' -> 'еевой Елены Владимировны.\n\nСпаси'
en4 English Ormlis 2022-10-22 01:23:21 150
ru6 Russian Ormlis 2022-10-22 01:21:37 170
ru5 Russian grphil 2022-10-22 01:15:22 20 Мелкая правка: 'ения задач. Любое на' -> 'ения задач до окончания раунда. Любое на'
en3 English grphil 2022-10-22 01:14:06 580
en2 English Ormlis 2022-10-22 01:07:10 167
ru4 Russian Ormlis 2022-10-22 01:05:30 173 Мелкая правка: '], [user:Syberian], [' -> '], [user:Siberian], ['
en1 English Ormlis 2022-10-22 01:02:21 3591 Initial revision for English translation (saved to drafts)
ru3 Russian Ormlis 2022-10-22 01:00:16 4 Мелкая правка: 'а системы codeforces и polygon, ко' -> 'а системы Codeforces и Polygon, ко'
ru2 Russian Ormlis 2022-10-22 00:45:09 1921 Мелкая правка: 'evlll777],[user:Arty' -> 'evlll777], [user:Arty'
ru1 Russian Ormlis 2022-10-22 00:17:06 4472 Первая редакция (сохранено в черновиках)