1 files changed, 0 insertions, 28 deletions
diff --git a/2015/day-03/day-03.rkt b/2015/day-03/day-03.rkt
deleted file mode 100644
index 1d44955..0000000
--- a/2015/day-03/day-03.rkt
+++ /dev/null
@@ -1,28 +0,0 @@
-#lang racket
-(require "../../jj-aoc.rkt"
-         threading
-         (only-in algorithms chunks-of)
-         racket/hash)
-
-(define directions
-  (for/list ([l (in-input-port-chars (open-day 3 2015))])
-    (string->symbol (string l))))
-
-(define (trace-santa dirs)
-  (define visits (make-hash))
-  (for/fold ([x 0] [y 0] #:result visits) ([dir (in-list dirs)])
-    (hash-set! visits `(,x ,y) #true)
-    (match dir
-      ['^ (values x (add1 y))]
-      ['v (values x (sub1 y))]
-      ['< (values (add1 x) y)]
-      ['> (values (sub1 x) y)])))
-
-;; part 1
-(~> directions trace-santa hash-values length)
-
-;; part 2
-(~> directions (chunks-of 2) (apply map list _) (map trace-santa _) (match-define (list real robo) _))
-
-(hash-union! real robo #:combine (λ _ #true))
-(~> real hash-values length)