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-rw-r--r--users/sterni/exercises/aoc/2022/20/20.bqn13
1 files changed, 13 insertions, 0 deletions
diff --git a/users/sterni/exercises/aoc/2022/20/20.bqn b/users/sterni/exercises/aoc/2022/20/20.bqn
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index 000000000000..8d4c905e8749
--- /dev/null
+++ b/users/sterni/exercises/aoc/2022/20/20.bqn
@@ -0,0 +1,13 @@
+⟨ReadDec⟩ ← •Import "../../lib.bqn"
+enc ← ReadDec¨ •FLines "input"
+
+CoordSum ← +´∘(1000‿2000‿3000⊸((⊢≠⊸|+⟜(⊑∘(/=⟜0)∘⊢))⊏⊢))
+Mix ← {
+  M ← {m 𝕊 i:
+    l ← ≠m
+    i {n ← (l-1)|(𝕩⊑m)+⊑/𝕩=𝕨 ⋄ (n⊸↑(∾⟜𝕩)⊸∾n⊸↓) 𝕩(≠/⊢)𝕨}˜´ ⌽↕l
+  }
+  CoordSum ((⊢M⍟𝕨↕∘≠)⊏⊢) 𝕩
+}
+•Out "day20.1: "∾•Fmt 1 Mix enc
+•Out "day20.2: "∾•Fmt 10 Mix 811589153×enc