Stefan2417's blog

By Stefan2417, history, 7 weeks ago, translation, In English

We hope you enjoyed the problems.

Problem 1977A - Little Nikita was created by Stefan2417 and prepared by alexchist.

Problem 1977B - Binary Colouring was created by alexchist and prepared by Stefan2417.

Problem 1977C - Nikita and LCM was created and prepared by Stefan2417.

Problem 1977D - XORificator was created and prepared by alexchist.

Problem 1977E - Tensor was created and prepared by Stefan2417.

1977A - Little Nikita

Tutorial
Author's code
Feedback

1977B - Binary Colouring

Tutorial
Author's code
Feedback

1977C - Nikita and LCM

Hint
Tutorial
Author's code
Feedback

1977D - XORificator

Hint
Tutorial
Author's code
Feedback

1977E - Tensor

Tutorial
Author's code
Feedback

Full text and comments »

  • Vote: I like it
  • +109
  • Vote: I do not like it

By Stefan2417, 2 months ago, translation, In English

Hello, Codeforces!

After a year of anticipation and several complete changes to the problem set, we are glad to invite you to take part in Codeforces Round 948 (Div. 2), which will start on Sunday, May/26/2024 17:35 (Moscow time). This round will be rated for participants whose rating is below 2100. Participants with higher ratings may participate out of the competition.

You will be given 5 problems and 2 hours to solve them. All the problems in the round are created and prepared by Stefan2417 and alexchist.

The round may include one or more interactive problems. Please read this blog to get familiar with this type of problems.

We would like to thank:

  • Vladithur for excellent round coordination!

Score distribution: $$$500 — 1250 — 1750 — 2000 — 2500$$$.

Your perception of the scoring may vary, so be sure to read the later problems if you get stuck on one.

Upd: Congratulations to the Winners!

Div 2:

  1. sun_gan_chou_yu_guan

  2. Maksiwelle

  3. suomynonA

  4. new_mistakes

  5. Kosyaaa

Div 1+2:

  1. tourist

  2. Sugar_fan

  3. sun_gan_chou_yu_guan

  4. abc864197532

  5. BurnedChicken

Upd: editorial

Full text and comments »

  • Vote: I like it
  • +273
  • Vote: I do not like it

By Stefan2417, history, 13 months ago, translation, In English

Hello everyone!

My school career in competitive programming is over and I decided to compile a list of tasks that I enjoyed/helped me learn something new. This list can be found in group

Full text and comments »

  • Vote: I like it
  • +71
  • Vote: I do not like it

By Stefan2417, history, 2 years ago, In English

Recently, a lot of accounts involved in mass cheating have started to appear:

kirya_molodec1 kirya_molodec2 kirya_molodec3 kirya_molodec4 kirya_molodec5 kirya_molodec6 kirya_molodec7 amaboss1 amaboss2 amaboss3 amaboss4 amaboss5 amaboss6 amaboss7

These accounts bypass the anti-plagiarism system by adding useless pieces of code and mixing it up. MikeMirzayanov Please improve the anti-plagiarism system.

Full text and comments »

  • Vote: I like it
  • +69
  • Vote: I do not like it