1 files changed, 0 insertions, 48 deletions
diff --git a/2022/day-20/day-20.rkt b/2022/day-20/day-20.rkt
deleted file mode 100644
index 6dd1070..0000000
--- a/2022/day-20/day-20.rkt
+++ /dev/null
@@ -1,48 +0,0 @@
-#lang racket
-(require advent-of-code
-         threading)
-
-(define data (port->list read (open-aoc-input (find-session) 2022 20 #:cache #true)))
-
-(define gps-lst data)
-(define gps-len (length gps-lst))
-(define gps-indexed (map cons (inclusive-range 1 gps-len) gps-lst))
-
-(define (mix pt data)
-  (match-define (list left ... (== pt) right ...) data)
-  (define start (index-of data pt))
-  (define move-by (modulo (cdr pt) (sub1 gps-len)))
-  (cond
-    [(= 0 move-by) data]
-    [(<= move-by (length right))
-     (match-define-values (new-left new-right)
-       (split-at (append left right) (modulo (+ move-by start) (sub1 gps-len))))
-     (append new-left (list pt) new-right)]
-    [else
-     (match-define-values (new-left new-right)
-       (split-at (append left right) (modulo (+ move-by start) (sub1 gps-len))))
-     (append new-left (list pt) new-right)]))
-
-(define (mix-gps data original)
-  (for/fold ([pts data]) ([pt original])
-    (mix pt pts)))
-
-(define (cycle-mixed-gps mixed)
-  (define lst (map cdr mixed))
-  (in-sequences (drop lst (index-of lst 0)) (in-cycle lst)))
-
-(define (calculate-answer seq)
-  (for/sum ([id '(1000 2000 3000)]) (sequence-ref seq id)))
-
-;; part 1
-(~> gps-indexed (mix-gps _ gps-indexed) cycle-mixed-gps calculate-answer)
-
-;; part 2
-(define encrypted-gps-indexed
-  (for/list ([pt (in-list gps-indexed)] #:do [(match-define (cons i v) pt)])
-    (cons i (* 811589153 v))))
-
-(~>> encrypted-gps-indexed
-     ((λ (data) (foldr (λ (_ pts) (mix-gps pts data)) data (range 10))))
-     cycle-mixed-gps
-     calculate-answer)