aboutsummaryrefslogtreecommitdiff
path: root/aoc2022/day-11/day-11.rkt
diff options
context:
space:
mode:
Diffstat (limited to 'aoc2022/day-11/day-11.rkt')
-rw-r--r--aoc2022/day-11/day-11.rkt85
1 files changed, 0 insertions, 85 deletions
diff --git a/aoc2022/day-11/day-11.rkt b/aoc2022/day-11/day-11.rkt
deleted file mode 100644
index af7b4ee..0000000
--- a/aoc2022/day-11/day-11.rkt
+++ /dev/null
@@ -1,85 +0,0 @@
-#lang racket
-(require threading)
-
-(struct monkey ([items #:mutable] operation modulus yes no))
-
-;; really don't feel like parsing the input today
-(define monkeys-list
- (list (cons 0 (monkey '(97 81 57 57 91 61)
- (λ (n) (* n 7))
- 11 5 6))
- (cons 1 (monkey '(88 62 68 90)
- (λ (n) (* n 17))
- 19 4 2))
- (cons 2 (monkey '(74 87)
- (λ (n) (+ n 2))
- 5 7 4))
- (cons 3 (monkey '(53 81 60 87 90 99 75)
- (λ (n) (+ n 1))
- 2 2 1))
- (cons 4 (monkey '(57)
- (λ (n) (+ n 6))
- 13 7 0))
- (cons 5 (monkey '(54 84 91 55 59 72 75 70)
- (λ (n) (* n n))
- 7 6 3))
- (cons 6 (monkey '(95 79 79 68 78)
- (λ (n) (+ n 3))
- 3 1 3))
- (cons 7 (monkey '(61 97 67)
- (λ (n) (+ n 4))
- 17 0 5))))
-
-(define monkey-lcm (~> monkeys-list (map (λ~> cdr monkey-modulus) _) (apply lcm _)))
-
-;; part 1
-(define monkeys-count-pt1 (make-hash))
-(define monkeys-hash-pt1 (make-hash monkeys-list))
-
-(for
- ([rnd (in-range 20)])
- (for
- ([turn (inclusive-range 0 7)])
- (match-define (monkey items op modulus yes no) (hash-ref monkeys-hash-pt1 turn))
- (for ([i (in-list items)])
- (define i* (quotient (op i) 3))
- (define m (if (= 0 (modulo i* modulus)) yes no))
- (match-define (monkey items* op* modulus* yes* no*) (hash-ref monkeys-hash-pt1 m))
- (hash-update! monkeys-count-pt1 turn add1 0)
- (hash-set! monkeys-hash-pt1
- m
- (monkey (append items* (list i*)) op* modulus* yes* no*)))
- (hash-set! monkeys-hash-pt1 turn (monkey '() op modulus yes no))))
-
-(~> monkeys-count-pt1
- hash->list
- (sort _ > #:key cdr)
- (take _ 2)
- (map cdr _)
- (apply * _))
-
-;; part 2
-(define monkeys-count-pt2 (make-hash))
-(define monkeys-hash-pt2 (make-hash monkeys-list))
-
-(for
- ([rnd (in-range 10000)])
- (for
- ([turn (inclusive-range 0 7)])
- (match-define (monkey items op modulus yes no) (hash-ref monkeys-hash-pt2 turn))
- (for ([i (in-list items)])
- (define i* (op i))
- (define m (if (= 0 (modulo i* modulus)) yes no))
- (match-define (monkey items* op* modulus* yes* no*) (hash-ref monkeys-hash-pt2 m))
- (hash-update! monkeys-count-pt2 turn add1 0)
- (hash-set! monkeys-hash-pt2
- m
- (monkey (append items* (list (remainder i* monkey-lcm))) op* modulus* yes* no*)))
- (hash-set! monkeys-hash-pt2 turn (monkey '() op modulus yes no))))
-
-(~> monkeys-count-pt2
- hash->list
- (sort _ > #:key cdr)
- (take _ 2)
- (map cdr _)
- (apply * _)) \ No newline at end of file