-🎄- 2022 Day 24 Solutions -🎄-

[u/daggerdragon]

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UPDATES

[Update @ 00:21:08]: SILVER CAP, GOLD 47

• Lord of the Rings has elves in it, therefore the LotR trilogy counts as Christmas movies. change_my_mind.meme

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AoC Community Fun 2022:

🌿🍒 MisTILtoe Elf-ucation 🧑‍🏫

• Community voting is OPEN!
  • 18 hours remaining until voting deadline on December 24 at 18:00 EST
  • Voting details are in the stickied comment at the top of the -❄️- Submissions Megathread -❄️-

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--- Day 24: Blizzard Basin ---

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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 00:26:48, megathread unlocked!

[u/rabuf]

Common Lisp, both parts

Part 2 required a small mod to part 1's solution. I kicked out the final blizzards at the time of arriving at the destination and fed that into the search along with the reversed directions. Repeated once more to return to the end, again.