huangzirui's blog

By huangzirui, history, 22 months ago, In English

1688A - Cirno's Perfect Bitmasks Classroom

Idea: huangzirui. Solution: huangzirui. Preparation: huangzirui.

Good problem
Average problem
Bad problem
Did not solve

Hint
Solution
Code (C++)
Code (Python)
Apology

1688B - Patchouli's Magical Talisman

Idea: Yakumo_Ran. Solution: Yakumo_Ran. Preparation: SSerxhs.

Good problem
Average problem
Bad problem
Did not solve

Hint1
Hint2
Solution
Code (C++)
Spoiler

1688C - Manipulating History

Idea: Yakumo_Ran. Solution: Yakumo_Ran, SSerxhs. Preparation: SSerxhs.

Good problem
Average problem
Bad problem
Did not solve

Hint1
Hint2
Hint3
Hint4
Hint5
Solution
Code (C++)
Code (Python)

1687A - The Enchanted Forest

Idea: Yakumo_Ran, SSerxhs. Solution: Yakumo_Ran. Preparation: SSerxhs.

Good problem
Average problem
Bad problem
Did not solve

Hint1
Hint2
Hint3
Solution
Code (C++)
Code (Python)

1687B - Railway System

Idea: Yakumo_Ran. Solution: Yakumo_Ran, huangzirui. Preparation: SSerxhs.

Good problem
Average problem
Bad problem
Did not solve

Hint1
Hint2
Hint3
Solution
Code (C++)
Code (Python)

1687C - Sanae and Giant Robot

Idea: Yakumo_Ran. Solution: Yakumo_Ran. Preparation: huangzirui, SSerxhs.

Good problem
Average problem
Bad problem
Did not solve

Hint1
Hint2
Solution
Code (C++)
Spoiler

1687D - Cute number

Idea: Yakumo_Ran. Solution: huangzirui. Preparation: SSerxhs, huangzirui.

Good problem
Average problem
Bad problem
Did not solve

Hint1
Hint2
Solution
Code (C++)

1687E - Become Big For Me

Idea: xiaoziyao. Solution: xiaoziyao, SSerxhs. Preparation: SSerxhs, xiaoziyao.

Good problem
Average problem
Bad problem
Did not solve

Hint
Solution
Code (C++)
Spoiler

1687F - Koishi's Unconscious Permutation

Idea: huangzirui. Solution: Elegia. Preparation: huangzirui, SSerxhs.

Good problem
Average problem
Bad problem
Did not solve

Hint
Solution
Code (C++)

Full text and comments »

  • Vote: I like it
  • +276
  • Vote: I do not like it

By huangzirui, history, 22 months ago, In English

Hi Codeforces! Happy Dragon Boat Festival!

We are glad to invite you to our first Codeforces Round Codeforces Round 796 (Div. 1) and Codeforces Round 796 (Div. 2) which will be held on 03.06.2022 17:35 (Московское время). This round will be rated for participants of both divisions. Participants in each division will be offered 6 problems and 2 hours to solve them. The two divisions will share 3 problems.

In this round, as the best friend of the characters in Touhou Project, you are going to help them solve the problems they meet.

The problems are prepared by xiaoziyao, Yakumo_Ran, SSerxhs, Cocoly1990, LilyWhite, Elegia and me. We hope you will enjoy this round.

Great thanks to:

Please pay attention that there will be no more than 998244353 interactive problems in this round, so learn more about interactive problems here before the contest.

Good luck & Have fun!

UPD 1:

Score Distribution:

Div2: $$$500 - 750 - 1250 - 1500 - 2000 - 3000$$$

Div1: $$$500 - 750 - 1500 - 1500 - 2000 - 3000$$$

UPD 2:

Editorial is out.

UPD 3:

Winners

Div.1:

  1. Um_nik
  2. Rewinding
  3. jiangly
  4. tourist
  5. SSRS_

Div.2:

official:

  1. Hanasaki
  2. tkended
  3. boboGM_when
  4. a_nanas
  5. rondoudou

unofficial:

  1. Teating_
  2. AgafonovArtem
  3. luogubot
  4. znqd3116
  5. XiShui_AKIOI

Full text and comments »

  • Vote: I like it
  • +746
  • Vote: I do not like it