### duality's blog

By duality, 2 months ago,

Video editorials for B, C, and D are available on ak2006's channel.

Hint 1
Hint 2
Solution
Implementation

Hint 1
Hint 2
Hint 3
Solution
Implementation

Hint 1
Hint 2
Solution
Implementation

Hint 1
Hint 2
Solution
Implementation

Hint 1
Hint 2
Hint 3
Hint 4
Solution
Implementation

### 1844F1 - Перестановка минимальной стоимости (простая версия)

Hint 1
Hint 2
Hint 3
Solution (easy version)
Implementation

### 1844F2 - Перестановка минимальной стоимости (сложная версия)

These hints and solution continue from the solution for the easy version, so please read the solution for the easy version first.

Hint 4
Hint 5
Hint 6
Solution (hard version)
Implementation

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Solution
Implementation

### 1844H - Циклы, кратные трём

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Hint 6
Solution
Implementation
• +379

By duality, history, 2 months ago,

Hello, Codeforces!

I invite everyone to participate in Codeforces Round 884 (Div. 1 + Div. 2), which will start on Jul/11/2023 17:35 (Moscow time). The round is a combined round and will be rated for everyone.

You will be given 8 problems and 3 hours to solve them. One of the problems is divided into two subtasks. The scoring distribution will be:

$500$ — $1000$ — $1250$ — $1500$ — $2000$ — $(2000+1000)$ — $3500$ — $4000$

All problems are written and prepared by me. I would like to thank:

I look forward to your participation and hope you enjoy the problems. Good luck!

UPD 1: Editorial

UPD 2: Congratulations to the winners!

and congratulations to cnnfls_csy and orz for solving problem H!

• +1077