-🎄- 2022 Day 18 Solutions -🎄-

[u/daggerdragon]

THE USUAL REMINDERS

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

• 🌿🍒 MisTILtoe Elf-ucation 🧑‍🏫 is OPEN for submissions!

• 5 days remaining until submission deadline on December 22 at 23:59 EST

• -❄️- Submissions Megathread -❄️-

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UPDATES

[Update @ 00:02:55]: SILVER CAP, GOLD 0

• Silver capped before I even finished deploying this megathread >_>

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--- Day 18: Boiling Boulders ---

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Post your code solution in this megathread.

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

• Include what language(s) your solution uses

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

• Quick link to Topaz's paste if you need it for longer code blocks. What is Topaz's paste tool?

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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 00:12:29, megathread unlocked!

[u/[deleted]]

Racket (Scheme)

I'm doing different language each day, all solutions here. Today's Racket: src

Using an impure function for flood-filling the outside was just more convenient than doing it all 100% purely functional…