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feat(sterni/aoc/2021): day 15 solution

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Change-Id: Idca2ae2829a7ee9e856aa7fcdc716c3055051062
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4363
Reviewed-by: sterni <sternenseemann@systemli.org>
Autosubmit: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
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sterni 2021-12-16 13:40:12 +01:00 committed by clbot
parent 0357dd973b
commit 01f4212ca1
1 changed files with 35 additions and 0 deletions
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35
users/sterni/exercises/aoc/2021/solutions.bqn
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@ -278,3 +278,38 @@ ElementRarityDiff ← {
•Out "Day 14.1: "∾•Fmt ElementRarityDiff 10
•Out "Day 14.2: "∾•Fmt ElementRarityDiff 40
#
# 2021-12-15
#
day15ExampleInput ← >⟨
1‿1‿6‿3‿7‿5‿1‿7‿4‿2
1‿3‿8‿1‿3‿7‿3‿6‿7‿2
2‿1‿3‿6‿5‿1‿1‿3‿2‿8
3‿6‿9‿4‿9‿3‿1‿5‿6‿9
7‿4‿6‿3‿4‿1‿7‿1‿1‿1
1‿3‿1‿9‿1‿2‿8‿1‿3‿7
1‿3‿5‿9‿9‿1‿2‿4‿2‿1
3‿1‿2‿5‿4‿2‿1‿6‿3‿9
1‿2‿9‿3‿1‿3‿8‿5‿2‿1
2‿3‿1‿1‿9‿4‿4‿5‿8‿1
⟩
day15Input ← '0'-˜ ((≠⋈≠∘⊑)⥊∾)ReadInput 15
LowestRiskLevel ← {
start ← 0˙⌾⊑ (⥊⟜∞) ≢𝕩
ir ← (1⊑≢𝕩)⥊∞
Step ← {𝕩 ⌊ 𝕨 + (ir⊸«⌊ir⊸»⌊∞⊸«˘⌊∞⊸»˘) 𝕩}
⊑⌽⥊ 𝕩⊸Step _fix start
}
! 40 = LowestRiskLevel day15ExampleInput
•Out "Day 15.1: "∾•Fmt LowestRiskLevel day15Input
FiveByFiveMap ← {(9⊸|)⌾(-⟜1) ∾(<𝕩)+ +⌜˜↕5}
! 315 = LowestRiskLevel FiveByFiveMap day15ExampleInput
•Out "Day 15.2: "∾•Fmt LowestRiskLevel FiveByFiveMap day15Input