day 1: shonks

1.rkt

@@ -0,0 +1,14 @@
+#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)))