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⟨ReadDec, SplitOn, IsAsciiNum⟩ ← •Import "../../lib.bqn"
rs‿rc ← (<"") SplitOn •FLines "../05/input"
stacks ← {
count ← '0'-˜⊑⌽' ' (≠/⊢) ⊑⌽rs
' ' (≠/⊢)¨<˘ (count×4) ((»∘(0⊸=)∘(4⊸|)∘↕⊣)/↑) ⍉> (-1)↓rs
}
cmds ← {0‿1‿1-˜ ReadDec¨ ((∧´IsAsciiNum)¨/⊢) (<' ') SplitOn 𝕩}¨ rc
_ApplyCmd ← {
s Fn _self c‿f‿t :
m‿k ← 2↑ c ((≤⟜(↕≠))⊔⊢) f⊑s
(Fn m)⊸∾⌾(t⊸⊑) k˙⌾(f⊸⊑) s
}
•Out "day05.1: "∾⊑¨stacks ⌽_ApplyCmd˜´ ⌽ cmds
•Out "day05.2: "∾⊑¨stacks ⊢_ApplyCmd˜´ ⌽ cmds
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