day 1: shonks

2020-12-01 16:34:16 -05:00 · 2020-12-01 16:34:16 -05:00 · 8925617afa
parent 58e8621d5b
commit 8925617afa
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+#lang racket
+
+;; solution for day 1
+
+(module+ main
+  (define nums (map string->number (file->lines "inputs/1")))
+
+  ;; part 1
+  (for*/first ([a (in-list nums)] [b (in-list nums)] #:when (= 2020 (+ a b)))
+    (* a b))
+
+  ;; part 2
+  (for*/first ([a (in-list nums)] [b (in-list nums)] [c (in-list nums)] #:when (= 2020 (+ a b c)))
+    (* a b c)))