1 files changed, 0 insertions, 67 deletions
diff --git a/2021/day-15/day-15-list-nodes.rkt b/2021/day-15/day-15-list-nodes.rkt
deleted file mode 100644
index 38c558a..0000000
--- a/2021/day-15/day-15-list-nodes.rkt
+++ /dev/null
@@ -1,67 +0,0 @@
-#lang racket
-(require "../../jj-aoc.rkt"
-         threading
-         graph)
-
-(define data
-  (for/fold ([cells (hash)])
-            ([row (in-lines (open-day 15 2021))]
-             [x (in-naturals)])
-    (for/fold ([cells cells])
-              ([n (in-string row)]
-               [y (in-naturals)])
-      (hash-set cells
-                `(,x ,y)
-                (~> n string string->number)))))
-
-(define x-max (~>> data hash-keys (map first) (apply max)))
-(define y-max (~>> data hash-keys (map second) (apply max)))
-
-(define (neighbors pt d)
-  (match-define (list x y) pt)
-  (~>> (list (list (add1 x) y)
-             (list (sub1 x) y)
-             (list x (add1 y))
-             (list x (sub1 y)))
-       (filter (curry hash-has-key? d))))
-
-(define (grid-graph d)
-  (weighted-graph/directed
-   (for*/list ([coord (in-list (hash-keys d))]
-               [neighbor (in-list (neighbors coord d))]
-               [weight (in-value (hash-ref d neighbor))])
-     (list weight coord neighbor))))
-
-;; part 1
-(define (find-path-weight d)
-  (define grid (grid-graph d))
-  (let-values ([(node-distances _) (dijkstra grid '(0 0))])
-    (define xm (~>> d hash-keys (map first) (apply max)))
-    (define ym (~>> d hash-keys (map second) (apply max)))
-    (hash-ref node-distances (list xm ym))))
-
-(~> data
-    find-path-weight
-    time)
-
-;; part 2
-(define nine-cycle
-  (in-cycle (inclusive-range 1 9)))
-
-(define (expand-data data)
-  (for/fold ([cells (hash)])
-            ([coord (in-list (hash-keys data))])
-    (match-define (list x y) coord)
-    (for*/fold ([cells cells])
-               ([n (in-range 5)]
-                [m (in-range 5)]
-                [val (in-value (hash-ref data coord))])
-      (hash-set cells
-                (list (+ x (* n (add1 x-max)))
-                      (+ y (* m (add1 y-max))))
-                (sequence-ref nine-cycle (+ val n m -1))))))
-
-(~> data
-    expand-data
-    find-path-weight
-    time)
-\ No newline at end of file