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Serval's blog

By Serval, 3 years ago, In English

1153A - Serval and Bus

Author: Serval, preparation: bzh


1153B - Serval and Toy Bricks

Author: Serval, Preparation: bzh


1153C - Serval and Parenthesis Sequence

Author & preparation: Serval


1153D - Serval and Rooted Tree

Author & preparation: bzh

Another Solution
Code for Another Solution

1153E - Serval and Snake

Authors & preparation: Serval, bzh

Bonus: How to save more queries?

1153F - Serval and Bonus Problem

Author: Serval, preparation: Serval, bzh


UPD: We fixed some mistakes and added another solution for D.

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By Serval, 3 years ago, In English

Hi Codeforces!

We are glad to invite you to our first Codeforces Round Codeforces Round #551 (Div. 2) which will be held on 13.04.2019 17:05 (Московское время). This round will be rated for participants with rating less than 2100. We will be glad to see participants from the first division to join out of competition as well!

In this round, as the best friend of Serval's, you are going to help him to solve the problems he meets.

The problems are prepared by bzh and me. We hope you will enjoy the round. :P

Great thanks to 300iq for coordination of this round, isaf27, vintage_Vlad_Makeev, KAN, mohammedehab2002, Learner99, Aleks5d and Um_nik for testing our rounds, and MikeMirzayanov for the amazing Codeforces and Polygon platforms.

You will be given 6 problems to solve in 2 hours. Scoring distribution will be announced later.

Please pay attention that there will be an interactive problem in this round, so learn more about interactive problems here before the contest.

Good luck & Have fun! :D

UPD: Scoring distribution is: 500-1000-1500-1750-2250-2750.

UPD2: Thank you for your participation in this round! Congratulations to the winners!

Div. 2

  1. ihdignite
  2. NiroBC
  3. mmmod_Iqs
  4. kidddddddddddddddddddddd
  5. xianhaoming
  6. __Ressed__
  7. nikolapesic2802
  8. xiaowuc1
  9. ei133333
  10. Kho0007

Div. 1 + Div. 2

  1. ihdignite
  2. kefaa2
  3. NiroBC
  4. uwi
  5. step_by_step
  6. mmmod_Iqs
  7. mmmod_lqs
  8. teja349
  10. quailty

UPD3: Sorry for the delay. The editorial is available.

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