day 25: all done....

This commit is contained in:
xenia 2020-12-25 00:21:17 -05:00
parent c0c11034af
commit f782867296
3 changed files with 67 additions and 1 deletions

53
25.rkt Normal file
View File

@ -0,0 +1,53 @@
#lang curly-fn racket
(require "scripts/aoc.rkt")
;; solution for day 25
(define *mod* 20201227)
(define (loop subject times)
(for/fold ([val 1]) ([_ (in-range (+ 0 times))])
(remainder (* val subject) *mod*)))
(define (part1 input)
(match-define (list you door) input)
(define you-loops #f)
(define door-loops #f)
(for/fold ([val 1]) ([loops (in-range 0 +inf.0)] #:break (and you-loops door-loops))
(when (= val you)
(set! you-loops loops))
(when (= val door)
(set! door-loops loops))
(remainder (* val 7) *mod*))
; (displayln you-loops)
; (displayln door-loops)
(displayln you-loops)
(displayln (loop 7 you-loops))
(displayln you)
(displayln door-loops)
(displayln (loop 7 door-loops))
(displayln door)
; (displayln (loop door-loops you-loops))
; (displayln (loop you-loops door-loops))
; (displayln (loop 17807724 8))
; (displayln (loop 5764801 11))
(loop you door-loops))
; (part1 (list 5764801 17807724))
; (error)
;; parse input file
(define (parse fname)
(define input (file->lines fname))
(map string->number input))
(module+ test
(require rackunit)
;; tests here
(displayln "no tests :("))
(module+ main
(define input (parse "inputs/25"))
(answer 25 1 (time (part1 input)))
(aoc-finish)
(displayln "meow"))

View File

@ -73,6 +73,9 @@
'answer-correct]
[(pregexp #px"That's not the right answer") 'answer-incorrect]
[(pregexp #px"You gave an answer too recently") 'rate-limited]
[(pregexp #px"fifty stars")
(aoc-set-complete! day part)
'year-complete]
[(pregexp #px"Did you already complete it?")
(aoc-set-complete! day part)
'already-completed]

View File

@ -3,7 +3,7 @@
;; utilities for every challenge script
(require "aoc-lib.rkt" threading syntax/parse/define (for-syntax racket/syntax) graph)
(provide answer dbg memoize define/memoized
(provide answer aoc-finish dbg memoize define/memoized
band bor bxor bnot bshl bshr bset? bfield
maximum-bipartite-matching/stable
(all-from-out threading syntax/parse/define graph)
@ -63,3 +63,13 @@
(~a answer)))
(printf "server responded: ~a\n" resp)]
[_ (printf "not submitting\n")])))
;; submit 25 part 2
(define (aoc-finish)
(unless (aoc-complete? 25 1)
(error "submit 25.1 first"))
(unless (aoc-complete? 25 2)
(printf "submitting done for 25.2...\n")
(define resp
(aoc-submit-answer (getenv "AOC_YEAR") "25" (getenv "AOC_SESSION") "2" "done"))
(printf "server responded: ~a\n" resp)))