rsj's blog

By rsj, history, 21 month(s) ago, In English

1787A - Exponential Equation

Idea & Solution: rsj

Tutorial

1787B - Number Factorization

Idea & Solution: rsj

Tutorial
Solution

1787C - Remove the Bracket

Idea & Solution: rsj

Fact
Tutorial
Solution

1787D - Game on Axis

Idea & Solution: jiangtaizhe001

Tutorial
Solution

1787E - The Harmonization of XOR

Idea & Solution: jiangtaizhe001, rsj

Tutorial
Bonus Problem

1787F - Inverse Transformation

Idea & Solution: qzhwlzy, rsj

Tutorial
Solution

1787G - Colorful Tree Again

Idea & Solution: rsj, 275307894a

Tutorial

1787H - Codeforces Scoreboard

Idea & Solution: jiangtaizhe001, rsj

Something To Say
Tutorial

1787I - Treasure Hunt

Idea & Solution: 275307894a

Tutorial

I'm really sorry for the unsatisfactory problems and the tough 3 hours ;)

However, I still hope you can enjoy the problems after the contest. The editorial hasn't been fully checked, so feel free to comment if there're errors, typos or you have questions about them. We'll check them out tomorrow. Thanks!

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By rsj, 21 month(s) ago, In English

Greetings, CodeForces!

jiangtaizhe001, qzhwlzy and I rsj are more than excited to invite you to participate in TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!), which starts on Jan/29/2023 17:35 (Moscow time).

The round is open and rated for everyone. You are given 9 problems, no subtasks or interactive problems, and you have 3 hours to solve them. It is recommended to read all problems. The statements were made as briefly and clearly as we could. Enjoy the contest!

UPD: Score distribution: $$$500-1000-1750-2000-2250-2500-3250-3500-3750$$$

Sincere thanks to:

Thanks to Vaticle's sponsership, winners will receive awesome prizes!

TypeDB

Cash and Swag Prizes

  • 1st place: 500 Euros
  • 2nd place: 250 Euros
  • 3rd place: 100 Euros
  • Top 50: TypeDB hoodie, t-shirt and stickers
  • Random 50 of 51-250: TypeDB t-shirt and stickers

About Vaticle & TypeDB

Vaticle is a team of people driven to empower engineers to solve complex problems. We are the creators of the strongly-typed database, TypeDB, and its query language, TypeQL. You can find out more about our work from another announcement post, interview post, our website and GitHub pages. You can also apply directly to our team using the button below:

Apply →

UPD1: Editorial

UPD2: Congratulations to the winners:

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By rsj, history, 3 years ago, In English

Problem Source.

I cannot find an clear editorial about it. Can you help me with

How this DP works?

How to combine the answers(meet)?

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