Advent Of Code

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An unofficial home for the advent of code community on programming.dev!

Advent of Code is an annual Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.

AoC 2024

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🪐 - 2024 DAY 11 SOLUTIONS -🪐 (programming.dev)

submitted 2 weeks ago by CameronDev@programming.dev to c/advent_of_code@programming.dev

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Day 11: Plutonian Pebbles

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[–] mykl@lemmy.world 4 points 2 weeks ago* (last edited 2 weeks ago)

Uiua

I thought this was going to be trivial to implement in Uiua, but I managed to blow the stack, meaning I had to set an environment variable in order to get it to run. That doesn't work in Uiua Pad, so for any counts larger than 15 you need to run it locally. Built-in memoisation though so that's nice.

# NB Needs env var UIUA_RECURSION_LIMIT=300
Next  ← ⍣([1] °0|[×2024] °1◿2⧻°⋕.|⍜°⋕(↯2_∞))
Count ← |2 memo(⨬(1|/+≡Count¤-1⊙Next)≠0.) # rounds, stone
≡(&p/+≡Count¤: ⊜⋕⊸≠@\s "125 17")[25 75]