M_Abu_Bakr_Shahid's blog

By M_Abu_Bakr_Shahid, history, 2 months ago, In English

TL;DR LEAVE A COMMENT TO REGISTER.

Since the ongoing BBC will end next week, I decided to introduce Intermediate Blitz Cup. (IBC)

If you are in the range between 1400 and 1899, send a comment below to register.

The IBC Elimination Round 1 will take place next week. If $$$N$$$ participate, $$$2^{\left\lfloor \log_2(n) \right\rfloor}$$$ will qualify.

Happy coding and blitzing!

Full text and comments »

  • Vote: I like it
  • +13
  • Vote: I do not like it

By M_Abu_Bakr_Shahid, history, 2 months ago, In English

The BBC 1 Elimination Round 1 has taken place and ended.

BRACKET

The top 16 will advance to Round 2.

Detailed Rules

Below are the Seedings and match pairings.

Wish You Good Luck.

Also here is the bracket.

The games:

homeBoy 2 vs 7 Ahmed-Nawaz, Game , Feb/17/2026 17:00 (Moscow time)

Rayyan_Wasiq 0 vs -1 byetelitch, Game , Feb/18/2026 05:00 (Moscow time) , byetelitch resigned.

Abdur-Rehman 23 vs 0 Faraz, Game , Feb/19/2026 04:01 (Moscow time)

NoObMin vs ZainUlHaq , Game, Feb/19/2026 12:15 (Moscow time)

Full text and comments »

  • Vote: I like it
  • -16
  • Vote: I do not like it

By M_Abu_Bakr_Shahid, history, 3 months ago, In English

Hello Everyone, we invite you to another Codeforces Beginner Round 5 which will take place on Jan/31/2026 17:45 (Moscow time) which will contain less than $$$67$$$ problems and all have been authored by M_Abu_Bakr_Shahid, Arman_Rustam_Hussain and MShaheer. Only 2 hours to solve them.

YOU ARE NOT ALLOWED TO USE ANY TYPE OF LLM. NO MORE WORDS!

We express our special thanks to: (most grateful to most horrendous)

-> M_Abu_Bakr_Shahid for making majority of the problems and coordinating the round.

-> MShaheer for making 1 problem (till now).

-> Arman_Rustam_Hussain for purposing one problem.

-> MikeMirzayanov for being MikeMirzayanov.

-> Zaid_804 for posting this blog.

I am extremely sorry for the problem in CBR 4 of Problem C, That's why c below:

UPD 1 : To register click the link that says 'Beginner Round 5', we will register you manually.

UPD 2: We would be eradicating the cheaters soon.

UPD 3: Here are the top 5:

  1. porzlck

  2. WhyPierce

  3. ._.SreyaS._.

  4. ashokkumars

  5. balaudaya3

Full text and comments »

By M_Abu_Bakr_Shahid, history, 3 months ago, In English

Hello CodeForces, we invite you to Beginner Contest 2 which will take place on Jan/19/2026 16:05 (Moscow time).

The round will contain less than $$$67$$$ problems all authored by me, Abdur-Rehman and Faraz.

We sincerely believe that you would not cheat. If you are found cheating then you would be sent to Room No. 11, and you are not allowed to bring oxygen masks or anything like that.

Hope to see you in the standings!

UPD1: Since registration is closed yet, anyone who clicks the link is manually registered by me.

UPD2: The contest has been extended by 20 minutes due to a bug in solution of E1/E2.

Full text and comments »

By M_Abu_Bakr_Shahid, history, 3 months ago, In English

Hello Codeforces, I invite you to my Beginner Contest 1 which will start at Jan/16/2026 16:00 (Moscow time)

There will be 5 or 6 problems to solve in 3 hours sorted in difficulty order. Final standings (will only include Div.4 users.). But anyone is welcome to participate.

The problems are authored by M_Abu_Bakr_Shahid.

The visualizers have been written by ChatGPT. (AI has a good use :))

See you at the standings! (OR at the question section arguing about Problem E2)

UPD: Since registration hasn't been opened yet, who ever clicks the invitation link will be manually registered by me.

UPD2: Registration is now open!!

UPD3: Hacks are now on!!

Editorial

Full text and comments »

  • Vote: I like it
  • +19
  • Vote: I do not like it