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 13 SOLUTIONS -🦀 (programming.dev)

submitted 2 weeks ago by [email protected] to c/[email protected]

33 comments fedilink hide all child comments

Day 13: Claw Contraption

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[–] [email protected] 2 points 1 week ago* (last edited 1 week ago) (2 children)

Uiua

Pretty much just a transcription of my Dart solution.

Data  ← ⊜(⊜(⊜⋕⊸∈"0123456789")⊸≠@\n)⊸(¬⦷"\n\n")"Button A: X+94, Y+34\nButton B: X+22, Y+67\nPrize: X=8400, Y=5400\n\nButton A: X+26, Y+66\nButton B: X+67, Y+21\nPrize: X=12748, Y=12176\n\nButton A: X+17, Y+86\nButton B: X+84, Y+37\nPrize: X=7870, Y=6450\n\nButton A: X+69, Y+23\nButton B: X+27, Y+71\nPrize: X=18641, Y=10279"
IsInt ← <0.00001⌵-⁅.
AB    ← ÷°⊂≡(/-×⇌°⊟)⊏[0_1 2_1 0_2]
Cost  ← /+×IsInt.×3_1AB
&p /+≡Cost Data
&p /+≡(Cost⍜(⊡2|+1e13))Data

[–] [email protected] 2 points 1 week ago (1 children)

Welp, got frustrated again with part one because there kept being something wrong with my totally-not-ugly loop and so came here again. I did have to change IsInt (and thus also Cost to account for different handling) for part two though because I kept getting wrong results for my input.
I'm guessing it's because uiua didn't see the difference between rounded and non-rounded number anymore.

Here's the updated, slightly messier version of the two functions that worked out for me in the end :D

IsInt ← ≍°⊟⍉⍜(⊙(⍉≡↙₂))(/+×)⊙⍉⁅
Cost  ← /+×3_1×⟜IsInt⊸AB

~Could~ ~have~ ~been~ ~done~ ~better~ ~but~ ~I'm~ ~lacking~ ~the~ ~patience~ ~for~ ~that~ ~now~

[–] [email protected] 2 points 1 week ago

Yeah, I had to fiddle with that limit before it actually worked for me, so it's clearly quite sensitive to the data :-)