AlphaMale06's blog

By AlphaMale06, 6 months ago, In English

Thank you for participating in the first ever Serbian Div. 3 Codeforces round!

Sorry

Also a massive thanks to Vladosiya for giving us a chance to create a divison 3 round!

1878A - How Much Does Daytona Cost?

Problem was authored and prepared by
Hints
Tutorial
Solution

1878B - Aleksa and Stack

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Hints
Tutorial
Solution

1878C - Vasilije in Cacak

Problem was authored and prepared by
Hints
Tutorial
Solution

1878D - Reverse Madness

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1878E - Iva & Pav

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Solution

1878F - Vasilije Loves Number Theory

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Solution

1878G - wxhtzdy ORO Tree

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By AlphaMale06, 6 months ago, In English

Hello, Codeforces!

ognjentesic, wxhtzdy, OAleksa, AndrewPav, Acanikolic73 and I are glad to invite you to the Codeforces Round 900 (Div. 3).

It starts on Sep/26/2023 17:35 (Moscow time)

You will be given 7 problems and 2 hours and 15 minutes to solve them.

Note that the penalty for the wrong submission in this round is 10 minutes.

Also note that there will be a 12 hour open hacking phase after the round.

Remember, that only the trusted participants of the third division will be included in the official standings table. As it is written by link, this is a compulsory measure for combating unsporting behavior. To qualify as a trusted participant of the third division, you must:

  • take part in at least five rated rounds (and solve at least one problem in each of them)
  • do not have a point of 1900 or higher in the rating.

Regardless of whether you are a trusted participant of the third division or not, if your rating is less than 1600, the round will be rated for you.

Problems have been created and prepared by AlphaMale06, ognjentesic, wxhtzdy, OAleksa, AndrewPav, Acanikolic73, and Vladosiya.

We would also to thank:

  1. Vladosiya for the amazing coordination and help with preparing a balanced problemset, and for giving us the opportunity to create a Div. 3 round.
  2. MikeMirzayanov for the amazing Polygon and Codeforces platforms.
  3. JovanB, abc864197532, sevlll777 for red testing
  4. NemanjaSo2005, n0sk1ll, allllekssssa, Alexdat2000, misorin, Hyperbolic for yellow testing
  5. DAleksa, ljuba, alex.kudryashov for purple testing
  6. MihailoT, SashaT9, BULLMCHOW, Chrisedyong, --tofu-- for blue testing
  7. Andrijanikolic73, Mihajlo18, UrosNedic, Klaus26, Escaquejant, mxon, max0n for cyan testing
  8. Budimmm for gray testing

Also a very special thanks to the most dedicated tester I have ever seen, NemanjaSo2005.

I wish you luck, and hope you like the problems and learn from them.

Update: Editorial is out.

Congratulations to the winners:

Unofficial:

  1. jiangly

  2. SSerxhs

  3. BucketPotato

  4. neal

  5. risujiroh

Official:

  1. hackerjohn

  2. wahb

  3. kutcoder

  4. Sxy_Limit

  5. not_rainboy

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