blobugh's blog

By blobugh, 4 years ago, In English

Hello Codeforces!

We invite you to Codeforces Round 821 (Div. 2) starting on Sep/19/2022 17:35 (Moscow time). The round is rated for users whose rating is lower than 2100.

All problems were mainly created and prepared by me. One problem is revised by mejiamejia. I would also like to thank:

You will be given 5 problems with one subtask and 2 hours to solve them. The score distribution will be announced closer to the start of the round.

Good luck, and have fun!

UPD1: Score distribution is 50010001500 — ( 1500 + 750 ) — 2750.

UPD2: System testing has been finished. Congratulations to the winners!

Out of competition

  1. Geothermal
  2. SSRS_
  3. tabr
  4. jiangly
  5. tute7627
  6. m_99
  7. kotatsugame
  8. Ethan_Rao
  9. maspy
  10. smax

Official participants

  1. LikeStrangers
  2. i_will_be_less_than_blue
  3. tlvvpdus
  4. PokerCareer
  5. casual11
  6. wildwolf_ptyzs
  7. MahiruShiina
  8. 963noah
  9. LovelyEther
  10. warner1129

UPD3: Editorial is published.

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By blobugh, 4 years ago, In English

Problem A is developed by mejiamejia.

1733A - Consecutive Sum

Hints
Solution
Solution Code
Challenge

1733B - Rule of League

Hints
Solution
Solution Code
Challenge

1733C - Parity Shuffle Sorting

Hints
Solution
Solution Code
Challenge

1733D1 - Zero-One (Easy Version)

Hints
Solution
Solution Code

1733D2 - Zero-One (Hard Version)

Hints
Solution
Solution Code
Challenge

1733E - Conveyor

Hints
Solution
Solution Code
Challenge

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By blobugh, 4 years ago, In English

Hello Codeforces!

I'm glad to invite you to participate in Codeforces Round 665 (Div. 2) taking place on Aug/21/2020 17:35 (Moscow time). The round is rated for users whose rating is lower than 2100.

All problems were mainly created and prepared by me, and I'd also like to thank:

You will be given 6 problems and 2 hours to solve them. The score distribution will be announced closer to the start of the round.

Good luck, and have fun!

UPD1 : Score distribution is 50010001500175025002500.

UPD2 : Editorial

UPD3 : System testing has finished. We hope you enjoyed the contest :)

UPD4 : Congratulations to the winners!

Div.1 (Out of competition)

  1. tribute_to_Ukraine_2022
  2. Egor
  3. jiangly
  4. Geothermal
  5. dlalswp25
  6. antontrygubO_o
  7. ashmelev
  8. Maksim1744
  9. Sugar_fan
  10. SSRS_

Div.2

  1. gamegamewillwinioi2021
  2. altair-chan
  3. Isouau
  4. rainboy
  5. kissenok
  6. Noche_5
  7. ghj1222
  8. nitinjan06
  9. Rchen3
  10. Gotz_X

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By blobugh, 4 years ago, In English

Thank you for participating. I hope you enjoyed the contest!

1401A - Distance and Axis

Tutorial
Solution Code
Behind Story

1401B - Ternary Sequence

Tutorial
Solution Code
Behind Story

1401C - Mere Array

Tutorial
Solution Code
Behind Story

1401D - Maximum Distributed Tree

Tutorial
Solution Code
Behind Story

1401E - Divide Square

Tutorial
Solution Code
Behind Story

1401F - Reverse and Swap

Tutorial
Solution Code
Behind Story

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