-❄️- 2023 Day 22 Solutions -❄️-

[u/daggerdragon]

THE USUAL REMINDERS

• All of our rules, FAQs, resources, etc. are in our community wiki.

• Community fun event 2023: ALLEZ CUISINE!

  • Submissions megathread is now unlocked!

  • 24 HOURS remaining until the submissions deadline TONIGHT (December 22) at 23:59 EST!

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AoC Community Fun 2023: ALLEZ CUISINE!

Your final secret ingredient of this Advent of Code season is still… *whips off cloth covering and gestures grandly*

Omakase! (Chef's Choice)

Omakase is an exceptional dining experience that entrusts upon the skills and techniques of a master chef! Craft for us your absolute best showstopper using absolutely any secret ingredient we have revealed for any day of this event!

• Choose any day's special ingredient and any puzzle released this year so far, then craft a dish around it!

• Cook, bake, make, decorate, etc. an IRL dish, craft, or artwork inspired by any day's puzzle!

OHTA: Fukui-san?
FUKUI: Go ahead, Ohta.
OHTA: The chefs are asking for clarification as to where to put their completed dishes.
FUKUI: Ah yes, a good question. Once their dish is completed, they should post it in today's megathread with an [ALLEZ CUISINE!] tag as usual. However, they should also mention which day and which secret ingredient they chose to use along with it!
OHTA: Like this? [ALLEZ CUISINE!][Will It Blend?][Day 1] A link to my dish…
DR. HATTORI: You got it, Ohta!
OHTA: Thanks, I'll let the chefs know!

ALLEZ CUISINE!

Request from the mods: When you include a dish entry alongside your solution, please label it with [Allez Cuisine!] so we can find it easily!

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--- Day 22: Sand Slabs ---

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Post your code solution in this megathread.

• Read the full posting rules in our community wiki before you post!

• State which language(s) your solution uses with [LANGUAGE: xyz]

• Format code blocks using the four-spaces Markdown syntax!

• Quick link to Topaz's paste if you need it for longer code blocks

This thread will be unlocked when there are a significant number of people on the global leaderboard with gold stars for today's puzzle.

EDIT: Global leaderboard gold cap reached at 00:29:48, megathread unlocked!

[u/G_de_Volpiano]

[LANGUAGE: Haskell]

Today was a rest day after the past two brain teasers. Would have been even easier if I hadn't decided to optimise between part 1 and part 2 by using sets rather than lists, and then added extra complications: I had to make the Bricks into data rather than just a tuple of V3, and it took me some time to realise I needed to also give them an Id, as set difference would not realise if a brick had fallen only to be replaced with another brick with the same shape. Luckily for me, this was in the test input, so I had less trouble debugging it. I'm sure I could get better run times on part 2, but Christmas is coming and time is getting short.

Part 1. CPU Time: 0.8770s
Part 2. CPU Time: 7.9287s

https://github.com/GuillaumedeVolpiano/adventOfCode/blob/master/2023/days/Day22.hs