diff options
Diffstat (limited to 'AoC2022')
| -rw-r--r-- | AoC2022/11/eg-in | 28 | ||||
| -rw-r--r-- | AoC2022/11/input | 55 | ||||
| -rw-r--r-- | AoC2022/11/solver.el | 100 |
3 files changed, 183 insertions, 0 deletions
diff --git a/AoC2022/11/eg-in b/AoC2022/11/eg-in new file mode 100644 index 0000000..dc98f0b --- /dev/null +++ b/AoC2022/11/eg-in @@ -0,0 +1,28 @@ + +Monkey 0: + Starting items: 79, 98 + Operation: new = old * 19 + Test: divisible by 23 + If true: throw to monkey 2 + If false: throw to monkey 3 + +Monkey 1: + Starting items: 54, 65, 75, 74 + Operation: new = old + 6 + Test: divisible by 19 + If true: throw to monkey 2 + If false: throw to monkey 0 + +Monkey 2: + Starting items: 79, 60, 97 + Operation: new = old * old + Test: divisible by 13 + If true: throw to monkey 1 + If false: throw to monkey 3 + +Monkey 3: + Starting items: 74 + Operation: new = old + 3 + Test: divisible by 17 + If true: throw to monkey 0 + If false: throw to monkey 1 diff --git a/AoC2022/11/input b/AoC2022/11/input new file mode 100644 index 0000000..809f96c --- /dev/null +++ b/AoC2022/11/input @@ -0,0 +1,55 @@ +Monkey 0: + Starting items: 57, 58 + Operation: new = old * 19 + Test: divisible by 7 + If true: throw to monkey 2 + If false: throw to monkey 3 + +Monkey 1: + Starting items: 66, 52, 59, 79, 94, 73 + Operation: new = old + 1 + Test: divisible by 19 + If true: throw to monkey 4 + If false: throw to monkey 6 + +Monkey 2: + Starting items: 80 + Operation: new = old + 6 + Test: divisible by 5 + If true: throw to monkey 7 + If false: throw to monkey 5 + +Monkey 3: + Starting items: 82, 81, 68, 66, 71, 83, 75, 97 + Operation: new = old + 5 + Test: divisible by 11 + If true: throw to monkey 5 + If false: throw to monkey 2 + +Monkey 4: + Starting items: 55, 52, 67, 70, 69, 94, 90 + Operation: new = old * old + Test: divisible by 17 + If true: throw to monkey 0 + If false: throw to monkey 3 + +Monkey 5: + Starting items: 69, 85, 89, 91 + Operation: new = old + 7 + Test: divisible by 13 + If true: throw to monkey 1 + If false: throw to monkey 7 + +Monkey 6: + Starting items: 75, 53, 73, 52, 75 + Operation: new = old * 7 + Test: divisible by 2 + If true: throw to monkey 0 + If false: throw to monkey 4 + +Monkey 7: + Starting items: 94, 60, 79 + Operation: new = old + 2 + Test: divisible by 3 + If true: throw to monkey 1 + If false: throw to monkey 6 diff --git a/AoC2022/11/solver.el b/AoC2022/11/solver.el new file mode 100644 index 0000000..397b911 --- /dev/null +++ b/AoC2022/11/solver.el @@ -0,0 +1,100 @@ +;;; solver.el --- Day 11 -*- lexical-binding: t; -*- +;; +;; Copyright (C) 2022 Óscar Nájera +;; +;; Author: Óscar Nájera <hi@oscarnajera.com> +;; Maintainer: Óscar Nájera <hi@oscarnajera.com> +;; Created: December 11, 2022 +;; Modified: December 11, 2022 +;; +;; This file is not part of GNU Emacs. +;; +;;; Commentary: +;; +;; Day 11 +;; +;;; Code: + +(require 'subr-x) +(require 'cl-lib) + +(cl-defstruct (monkey (:constructor monkey--create) + (:copier nil)) + "Monkey container" + id + items + worry-level + throw-to) + +(defun solver-monkey-make (id items operation divisor true-target false-target) + (let ((op (if (string-prefix-p "*" operation) #'* #'+)) + (operand (unless (string-suffix-p "old" operation) + (string-to-number (substring operation 1)))) + (div (string-to-number divisor)) + (true (string-to-number true-target)) + (false (string-to-number false-target))) + (monkey--create + :id (string-to-number id) + :items (nreverse (mapcar #'string-to-number (split-string items ", "))) + :worry-level (lambda (item) + (thread-first + (funcall op item (or operand item)) ;; value item + (floor 3))) ;; loose interest + + :throw-to (lambda (item) + (thread-first item + (mod div) ;; throw input + (= 0) ;; divisble + (if true false)))))) + +(defun solver-parse-monkey-entry () + (when + (re-search-forward (rx bol "Monkey " (group digit) ":" (+ space) + "Starting items: " (group (+ (1+ digit) (? ", "))) (+ space) + "Operation: new = old " (group (1+ any)) (+ space) + "Test: divisible by " (group (1+ digit)) (+ space) + "If true: throw to monkey " (group digit) (+ space) + "If false: throw to monkey " (group digit) eol) + nil t) + (apply #'solver-monkey-make + (mapcar #'match-string (number-sequence 1 6))))) + +(defun solver-monkey-business (works) + (let ((ranks (sort works #'>))) + (* (aref ranks 0) (aref ranks 1)))) + +(defun solver-get-monkeys (filename) + (with-temp-buffer + (insert-file-contents filename) + (goto-char (point-min)) + (cl-loop for monkey = (solver-parse-monkey-entry) while monkey collect monkey))) + +(defun solver-monkey-rounds (monkeys rounds) + (let ((monkey-work (make-vector (length monkeys) 0))) + ;; play round + (dotimes (_ rounds) + (dolist (monkey monkeys) + (let ((items (nreverse (monkey-items monkey)))) + (setf (monkey-items monkey) nil) + (cl-incf (aref monkey-work (monkey-id monkey)) (length items)) + (mapc (lambda (item) + (let* ((item-concern (funcall (monkey-worry-level monkey) item)) + (target-monkey (funcall (monkey-throw-to monkey) item-concern))) + (push item-concern (monkey-items (cl-find target-monkey monkeys :key #'monkey-id))))) + items)) + ;; (message "monkey %d - items: %s\n all: %S" (monkey-id monkey) (monkey-items monkey) + ;; (mapcar #'monkey-items monkeys)) + )) + (solver-monkey-business monkey-work))) + +(= 10605 + (thread-first + "eg-in" + (solver-get-monkeys) + (solver-monkey-rounds 20))) + +(= 50830 + (thread-first + "input" + (solver-get-monkeys) + (solver-monkey-rounds 20))) |