diff --git a/aoc.bqn b/aoc.bqn
new file mode 100644
index 0000000..d9d35aa
--- /dev/null
+++ b/aoc.bqn
@@ -0,0 +1,7 @@
+
+day1 ⇐ {
+  nums ← •BQN⎊0¨ •FLines "input/day1"
+  sums ← ∨ (+´ {𝕩↑𝕨↓nums}´)¨ (»⋈¨ ⊢-») / 0⊸≡¨ nums
+
+  a ⇐ ⊑sums ⋄ b ⇐ +´ 3↑sums
+}