Cube Conundrum part 1
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((scheme-mode . ((geiser-scheme . 'chicken))))
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@ -0,0 +1 @@
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*~
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515
chicken.org
515
chicken.org
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@ -55,9 +55,132 @@ these together produces =142=.
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Consider your entire calibration document. *What is the sum of all of the calibration values?*
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*** Puzzle Input
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*** Puzzle Solution
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:PROPERTIES:
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:ID: day1-puzzle-solution-1
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:END:
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Jump to [[#headline-6][the solution]].
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#+NAME: day1-solution-1
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#+begin_src scheme :var input=day1-input
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(import (chicken string)
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(chicken irregex))
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(let ((lines (string-split input "\n")))
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(foldl + 0
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(map
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(lambda (line)
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(let ((digits (irregex-extract '(/ #\0 #\9) line)))
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(if (= 0 (length digits))
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0
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(let ((first-digit (car digits))
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(last-digit (car (reverse digits))))
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(string->number (string-append first-digit last-digit))))))
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lines)))
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#+end_src
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#+RESULTS: day1-solution-1
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: 54159
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** Part Two
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*** Quest
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Your calculation isn't quite right. It looks like some of the digits are actually *spelled out with
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letters*: =one=, =two=, =three=, =four=, =five=, =six=, =seven=, =eight=, and =nine= *also* count as
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valid "digits".
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Equipped with this new information, you now need to find the real first and last digit on each
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line. For example:
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#+begin_example
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two1nine
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eightwothree
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abcone2threexyz
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xtwone3four
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4nineeightseven2
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zoneight234
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7pqrstsixteen
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#+end_example
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In this example, the calibration values are =29=, =83=, =13=, =24=, =42=, =14=, and =76=. Adding
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these together produces =281=.
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*What is the sum of all of the calibration values?*
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*** Puzzle Solution
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#+NAME: day1-solution-2
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#+begin_src scheme
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(import (chicken string)
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(chicken irregex))
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(define (extract-digits input-string)
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(irregex-extract '(or (/ #\0 #\9)
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"one"
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"two"
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"three"
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"four"
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"five"
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"six"
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"seven"
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"eight"
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"nine"
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; Duplicates
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"twone"
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"eightwo"
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"nineight"
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"eighthree"
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"threeight"
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"fiveight"
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"oneight"
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"sevenine")
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input-string))
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(define (translate-code digit)
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(case (string->symbol digit)
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((|0|) "0")
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((|1| one) "1")
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((|2| two) "2")
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((|3| three) "3")
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((|4| four) "4")
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((|5| five) "5")
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((|6| six) "6")
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((|7| seven) "7")
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((|8| eight) "8")
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((|9| nine) "9")
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; Again, duplicates
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((twone) "21")
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((eightwo) "82")
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((nineight) "98")
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((eighthree) "83")
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((threeight) "38")
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((fiveight) "58")
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((oneight) "18")
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((sevenine) "79")
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))
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(let ((lines (string-split input "\n")))
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(foldl + 0
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(map
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(lambda (line)
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(let ((digits (string->list
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(foldl string-append ""
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(map translate-code (extract-digits line))))))
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(if (= 0 (length digits))
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0
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(let ((first-digit (car digits))
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(last-digit (car (reverse digits))))
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(string->number (string first-digit last-digit))))))
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lines)))
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#+end_src
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#+RESULTS: day1-solution-2
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: 53866
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** Puzzle Input
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Jump to [[#headline-10][day 2]].
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#+NAME: day1-input
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#+begin_example
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@ -1063,123 +1186,291 @@ eightbqfhnmvqsoneninezbrzcqkz4ftv
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1eightcrcjcbdthreebscfpvznqfrj6
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#+end_example
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*** Puzzle Solution
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:PROPERTIES:
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:ID: day1-puzzle-solution-1
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:END:
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* Day 2: Cube Conundrum
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#+NAME: day1-solution-1
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#+begin_src scheme :var input=day1-input
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(import (chicken string)
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(chicken irregex))
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(let ((lines (string-split input "\n")))
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(foldl + 0
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(map
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(lambda (line)
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(let ((digits (irregex-extract '(/ #\0 #\9) line)))
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(if (= 0 (length digits))
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0
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(let ((first-digit (car digits))
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(last-digit (car (reverse digits))))
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(string->number (string-append first-digit last-digit))))))
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lines)))
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** Part One
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*** Quest
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You're launched high into the atmosphere! The apex of your trajectory just barely reaches the
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surface of a large island floating in the sky. You gently land in a fluffy pile of leaves. It's
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quite cold, but you don't see much snow. An Elf runs over to greet you.
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The Elf explains that you've arrived at *Snow Island* and apologizes for the lack of snow. He'll be
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happy to explain the situation, but it's a bit of a walk, so you have some time. They don't get many
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visitors up here; would you like to play a game in the meantime?
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As you walk, the Elf shows you a small bag and some cubes which are either red, green, or blue. Each
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time you play this game, he will hide a secret number of cubes of each color in the bag, and your
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goal is to figure out information about the number of cubes.
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To get information, once a bag has been loaded with cubes, the Elf will reach into the bag, grab a
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handful of random cubes, show them to you, and then put them back in the bag. He'll do this a few
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times per game.
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You play several games and record the information from each game (your puzzle input). Each game is
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listed with its ID number (like the =11= in =Game 11: ...=) followed by a semicolon-separated list of
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subsets of cubes that were revealed from the bag (like =3 red, 5 green, 4 blue=).
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For example, the record of a few games might look like this:
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#+begin_example
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Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
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Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
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Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
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Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
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Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green
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#+end_example
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In game 1, three sets of cubes are revealed from the bag (and then put back again). The first set is
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3 blue cubes and 4 red cubes; the second set is 1 red cube, 2 green cubes, and 6 blue cubes; the
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third set is only 2 green cubes.
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The Elf would first like to know which games would have been possible if the bag contained *only 12
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red cubes, 13 green cubes, and 14 blue cubes*?
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In the example above, games 1, 2, and 5 would have been *possible* if the bag had been loaded with
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that configuration. However, game 3 would have been *impossible* because at one point the Elf showed
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you 20 red cubes at once; similarly, game 4 would also have been *impossible* because the Elf showed
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you 15 blue cubes at once. If you add up the IDs of the games that would have been possible, you
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get =8=.
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Determine which games would have been possible if the bag had been loaded with only 12 red cubes, 13
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green cubes, and 14 blue cubes. *What is the sum of the IDs of those games?*
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*** Puzzle Solution
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I decided to make the code for this as readable as possible.
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I've split the process into multiple parts:
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**** Record Splitting
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Here, I am turning the input data into an alist with the game number as key, and the draws as value
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of the entries, by using irregex matches.
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#+NAME: day2-part1-record-splitting
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#+begin_src scheme
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;; Records
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(define record-pattern
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'(: bol
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"Game "
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(submatch-named game-no (+ (/ #\0 #\9)))
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":"
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(submatch-named draws (*? any))
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eol))
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(define (record-kons from-index match seed)
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(cons
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(cons (string->number (irregex-match-substring match 'game-no))
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(draws-fold (irregex-match-substring match 'draws)))
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seed))
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(define (record-fold input)
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(irregex-fold record-pattern record-kons '() input))
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#+end_src
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#+RESULTS: day1-solution-1
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: 54159
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**** Draw Splitting
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Next, as already called inside ~record-kons~, the list of draws has to be split and processed into
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individual draws. Here, I simply split them.
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#+NAME: day2-part1-draw-splitting
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#+begin_src scheme
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;; Draws
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(define draws-pattern
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'(: " " (* (~ #\;))))
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(define (draws-kons from-index match seed)
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(cons
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(draw-fold (irregex-match-substring match))
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seed))
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(define (draws-fold line)
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(irregex-fold draws-pattern draws-kons '() line))
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#+end_src
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**** Draw Processing
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And as the last pre-processing step, I take apart the individual draws, and assign each amount to
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its respective colour keyword.
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#+NAME: day2-part1-draw-processing
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#+begin_src scheme
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;; Draw
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(define draw-pattern
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'(: " "
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(submatch-named amount (+ (/ #\0 #\9)))
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" "
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(submatch-named colour (or "red" "green" "blue"))
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(? ",")))
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(define (draw-kons from-index match seed)
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(cons
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(cons (string->keyword (irregex-match-substring match 'colour))
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(string->number (irregex-match-substring match 'amount)))
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seed))
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(define (draw-fold draw)
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(irregex-fold draw-pattern draw-kons '() draw))
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#+end_src
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**** Main Program
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I check the possibility of a game by folding over its draws, starting with a ~#t~ (true) value;
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basically, it is nothing more than a recursive ~and~ statement.
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#+NAME: day2-part1-success-check
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#+begin_src scheme
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;; Game success check
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(define (game-possible? draws)
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(foldl (lambda (seed draw)
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(and seed
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(>= 12 (alist-ref #:red draw eqv? 0))
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(>= 13 (alist-ref #:green draw eqv? 0))
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(>= 14 (alist-ref #:blue draw eqv? 0))))
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#t draws))
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#+end_src
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Then, I put everything together in a main function, preprocessing the input and summing up all game
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ids for which ~game-possible?~ returns ~#t~.
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#+NAME: day2-part1-main-function
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#+begin_src scheme
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;; Main function
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(define (sum-of-valid-games input)
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(let ((games (record-fold input)))
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(foldl
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(lambda (seed game)
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(let ((game-id (car game))
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(draws (cdr game)))
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(if (game-possible? draws)
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(+ seed game-id)
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seed)))
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0 games)))
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#+end_src
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And now, everything can be put together:
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#+NAME: day2-part1-solution
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#+begin_src scheme :noweb no-export
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(import (chicken string)
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(chicken keyword)
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(chicken irregex))
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<<day2-part1-draw-processing>>
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<<day2-part1-draw-splitting>>
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<<day2-part1-record-splitting>>
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<<day2-part1-success-check>>
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<<day2-part1-main-function>>
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#+end_src
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#+RESULTS: day2-part1-solution
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: 2406
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** Part Two
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*** Quest
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To be done...
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Your calculation isn't quite right. It looks like some of the digits are actually *spelled out with
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letters*: =one=, =two=, =three=, =four=, =five=, =six=, =seven=, =eight=, and =nine= *also* count as
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valid "digits".
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Equipped with this new information, you now need to find the real first and last digit on each
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line. For example:
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** Puzzle Input
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#+NAME: day2-input
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#+begin_example
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two1nine
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eightwothree
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abcone2threexyz
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xtwone3four
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4nineeightseven2
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zoneight234
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7pqrstsixteen
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Game 1: 2 blue, 4 green; 7 blue, 1 red, 14 green; 5 blue, 13 green, 1 red; 1 red, 7 blue, 11 green
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Game 2: 6 blue, 3 green; 4 red, 1 green, 7 blue; 2 green
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Game 3: 4 blue, 3 red; 2 blue, 4 red, 7 green; 1 blue, 6 red, 7 green; 5 green, 10 blue; 9 green, 1 blue, 6 red; 8 blue, 1 red, 12 green
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Game 4: 15 blue, 4 green, 5 red; 2 red, 2 green, 5 blue; 3 green, 13 blue; 17 blue, 1 green, 5 red
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Game 5: 11 green, 4 red, 3 blue; 8 blue, 6 green; 8 green, 2 red, 9 blue; 4 red, 16 blue; 8 blue, 10 red, 6 green; 9 blue, 3 red, 10 green
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Game 6: 4 green, 9 red, 2 blue; 7 red, 2 green, 15 blue; 13 red, 2 green, 6 blue; 5 green, 7 blue, 6 red; 19 red, 15 blue, 4 green
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Game 7: 12 blue, 5 red; 5 green, 6 blue; 5 red, 15 blue; 5 blue, 5 red, 5 green; 1 green, 11 blue, 2 red
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Game 8: 6 red, 11 green; 5 red, 2 blue, 7 green; 7 red, 6 green
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Game 9: 5 red, 1 blue, 11 green; 4 green, 1 blue; 8 green, 2 red; 1 green, 2 red, 2 blue; 3 green, 2 red
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Game 10: 7 blue, 4 red, 11 green; 13 green, 1 red, 1 blue; 7 blue, 6 green
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Game 11: 4 blue, 7 red, 2 green; 1 green, 14 red, 3 blue; 2 green, 5 red, 3 blue
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Game 12: 6 green, 6 blue, 1 red; 1 green, 3 red, 2 blue; 2 blue, 6 red, 7 green
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Game 13: 6 red, 10 green, 13 blue; 3 red, 12 green, 9 blue; 11 blue, 1 green; 4 red, 3 blue, 13 green; 12 green, 10 blue, 6 red; 13 blue, 3 green, 3 red
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Game 14: 8 green, 1 blue, 17 red; 7 green, 11 blue, 19 red; 19 red, 9 blue, 2 green; 8 green, 20 red, 12 blue; 16 red, 3 green, 11 blue
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Game 15: 3 red, 1 green, 5 blue; 9 blue, 4 green; 6 blue, 5 green, 9 red
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Game 16: 13 blue, 1 red; 2 blue, 2 green; 1 green; 10 blue, 8 red; 4 red, 3 green, 9 blue
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Game 17: 10 blue, 2 red; 3 green, 4 red; 6 blue, 1 red, 6 green; 5 green, 7 blue, 5 red
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Game 18: 3 red, 1 green; 2 red, 5 blue; 5 blue, 2 red
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Game 19: 7 green, 4 blue, 1 red; 1 green, 4 blue, 4 red; 6 blue, 8 green; 4 green, 2 blue, 1 red; 1 red, 1 blue, 2 green
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Game 20: 13 green, 1 red, 1 blue; 12 green, 1 blue; 5 green, 1 blue, 2 red; 16 green, 3 red; 2 red, 9 green
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Game 21: 8 red, 2 green, 2 blue; 5 red, 3 blue; 2 blue, 5 red, 2 green; 7 blue
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Game 22: 9 red, 12 blue, 7 green; 7 red, 13 blue, 4 green; 9 blue, 13 red, 1 green; 3 blue, 4 red, 5 green
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Game 23: 7 green, 12 red; 6 red, 7 green, 4 blue; 1 blue, 11 red, 5 green; 4 green, 2 blue, 6 red; 12 green, 6 red, 3 blue
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Game 24: 11 red, 4 blue; 9 blue, 6 green, 17 red; 8 green, 2 red; 16 blue, 6 red, 2 green
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Game 25: 7 red, 4 blue; 7 blue, 4 green; 10 blue, 4 red, 2 green; 6 green, 4 blue, 1 red; 10 blue, 2 red, 4 green
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Game 26: 7 green, 8 red, 6 blue; 5 red, 3 green, 2 blue; 13 blue, 6 green, 5 red; 10 blue, 4 red, 8 green; 2 red, 2 blue, 1 green; 8 blue, 1 green, 4 red
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Game 27: 7 green, 3 blue, 13 red; 1 green, 17 red, 1 blue; 16 red, 3 blue, 3 green; 5 green, 3 red, 5 blue; 13 red, 4 green, 8 blue; 6 blue, 2 green, 15 red
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Game 28: 8 blue, 5 red, 18 green; 1 green, 6 red; 7 blue, 18 green, 5 red; 16 green, 3 red, 7 blue; 6 blue, 18 green; 8 blue, 8 green, 7 red
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Game 29: 4 blue, 1 red; 6 blue, 1 red; 17 blue, 1 green
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Game 30: 1 red, 2 green, 5 blue; 2 blue, 7 green, 6 red; 11 blue, 4 red, 2 green; 5 green, 6 blue, 4 red; 5 red, 8 blue, 7 green
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Game 31: 10 green, 9 blue; 5 green, 9 blue, 1 red; 1 red, 8 blue
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Game 32: 3 red, 5 green; 5 red, 5 blue, 14 green; 2 red, 2 green; 11 green, 3 red, 5 blue
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Game 33: 7 blue, 10 green, 8 red; 18 blue, 15 green, 4 red; 6 red, 1 green; 18 blue, 8 red, 11 green
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Game 34: 3 green; 2 red, 5 green; 5 blue, 3 green; 3 blue, 5 green, 1 red
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Game 35: 1 blue, 5 green, 6 red; 3 green, 2 red, 3 blue; 4 red, 9 blue, 3 green; 1 green, 12 blue, 1 red
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Game 36: 14 green, 3 blue, 16 red; 1 green, 2 red, 4 blue; 4 blue, 9 green, 18 red; 4 blue, 4 green, 14 red; 4 blue, 11 green
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Game 37: 7 green, 2 blue, 3 red; 8 green, 9 red, 2 blue; 4 blue, 15 green, 18 red
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Game 38: 11 red, 1 blue, 6 green; 6 green, 2 blue, 1 red; 6 blue, 17 red, 2 green; 17 red, 9 blue, 3 green; 7 red, 7 blue, 3 green; 3 green, 7 red, 7 blue
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Game 39: 1 blue, 2 green; 1 blue, 2 green, 7 red; 1 blue, 4 red, 2 green; 1 blue, 12 red
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Game 40: 1 blue, 4 red, 15 green; 12 green, 1 blue, 15 red; 15 red, 8 green
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Game 41: 5 blue, 5 green, 1 red; 9 red, 8 green, 9 blue; 10 red, 10 blue, 4 green; 3 blue, 17 red, 3 green; 3 blue, 4 red, 2 green
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Game 42: 2 blue, 10 red, 17 green; 6 red, 10 green, 10 blue; 3 blue, 6 green, 8 red; 9 green, 2 blue, 8 red; 13 green, 5 blue; 4 red, 18 green, 11 blue
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Game 43: 8 red, 3 blue, 6 green; 2 red, 8 green, 10 blue; 5 blue, 9 red, 9 green; 1 green, 15 red, 8 blue
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Game 44: 11 green, 19 red, 14 blue; 1 red, 19 green, 9 blue; 7 green, 8 red, 10 blue; 14 green, 8 blue, 15 red; 7 green, 3 red, 2 blue
|
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Game 45: 4 green, 9 blue, 4 red; 7 blue, 13 green, 2 red; 12 green, 10 blue, 10 red
|
||||
Game 46: 10 red, 2 green, 1 blue; 10 red, 10 green, 1 blue; 1 blue, 13 green; 1 blue, 2 green, 10 red; 1 blue, 7 red, 11 green; 10 red, 5 green
|
||||
Game 47: 3 blue, 2 green, 12 red; 5 blue, 7 red; 5 green, 14 red; 12 red, 7 green, 5 blue
|
||||
Game 48: 5 red, 1 blue, 3 green; 7 red, 8 green, 4 blue; 4 blue, 5 green, 17 red; 1 blue, 12 red
|
||||
Game 49: 2 green, 7 red, 1 blue; 11 green, 5 red; 4 red, 1 blue, 1 green; 11 green, 1 blue, 7 red
|
||||
Game 50: 10 red, 3 blue, 6 green; 1 blue, 5 red, 3 green; 6 blue, 11 red, 12 green; 10 green
|
||||
Game 51: 18 blue, 1 green, 1 red; 15 blue; 13 blue, 11 green, 4 red; 8 red, 1 green, 18 blue; 10 green, 7 blue, 8 red
|
||||
Game 52: 13 green, 15 blue; 6 blue, 4 red, 8 green; 6 red, 13 green, 11 blue; 2 red, 7 green, 13 blue; 12 green, 2 blue, 3 red; 6 red, 11 green, 1 blue
|
||||
Game 53: 2 red, 2 green; 3 green, 1 blue, 1 red; 1 blue, 4 green, 7 red; 4 red, 1 blue; 4 red, 5 green, 2 blue
|
||||
Game 54: 8 blue, 2 red, 5 green; 6 green, 2 blue, 3 red; 1 blue, 8 green, 4 red
|
||||
Game 55: 6 green, 6 blue, 3 red; 13 green, 1 red; 2 blue, 1 red, 1 green; 14 green, 1 blue, 1 red; 1 blue, 2 red, 9 green; 9 green, 2 blue, 4 red
|
||||
Game 56: 4 green, 6 blue, 1 red; 5 red, 3 blue; 6 red, 1 blue; 9 green, 5 blue, 7 red
|
||||
Game 57: 5 red, 5 green, 8 blue; 11 red, 3 blue, 8 green; 7 green, 9 blue, 11 red; 3 green, 2 blue, 12 red
|
||||
Game 58: 3 green, 3 red; 4 red, 1 green; 1 red, 6 green; 5 green; 5 red, 1 blue, 3 green; 3 red, 1 blue
|
||||
Game 59: 2 green, 2 blue; 7 red, 18 green; 2 blue, 7 red, 16 green; 7 red, 10 green
|
||||
Game 60: 3 blue, 4 red; 4 blue, 3 red, 3 green; 16 green
|
||||
Game 61: 1 blue, 2 red, 8 green; 9 blue, 4 green, 12 red; 10 green, 2 red; 5 blue, 11 red, 1 green; 10 green, 3 blue, 8 red; 5 red, 2 green
|
||||
Game 62: 15 red, 10 blue, 7 green; 4 blue, 9 red, 4 green; 4 red, 2 blue, 2 green; 11 green, 2 red; 8 blue, 2 green; 2 green, 8 red, 8 blue
|
||||
Game 63: 2 green, 3 blue, 1 red; 7 blue, 5 red; 7 blue
|
||||
Game 64: 3 green, 5 blue, 6 red; 9 green, 4 red; 13 red, 1 blue, 5 green; 4 blue, 13 red, 8 green
|
||||
Game 65: 7 green, 1 blue; 1 red, 14 blue, 4 green; 8 blue, 6 red; 14 green, 4 red
|
||||
Game 66: 6 red, 11 green, 7 blue; 1 blue, 6 red; 13 red, 7 blue, 3 green; 8 red, 6 blue, 15 green; 7 green, 6 blue, 4 red; 4 red, 1 blue, 20 green
|
||||
Game 67: 4 blue, 9 green; 15 red, 16 green, 3 blue; 1 green, 14 red, 3 blue; 3 red, 2 blue, 3 green; 4 green, 3 blue, 12 red
|
||||
Game 68: 5 green, 3 blue, 2 red; 4 green, 8 blue, 11 red; 6 red, 6 blue, 4 green; 8 red, 5 blue, 7 green; 6 blue, 6 green, 11 red; 2 blue, 3 green, 3 red
|
||||
Game 69: 15 blue, 16 green, 5 red; 10 blue, 3 red, 13 green; 4 red, 5 blue, 2 green; 1 red; 11 green, 5 red, 15 blue
|
||||
Game 70: 8 red, 9 blue, 12 green; 3 red, 2 blue, 14 green; 10 blue, 1 red, 18 green; 1 blue, 7 red, 16 green; 3 green, 4 red, 16 blue; 10 green, 6 red
|
||||
Game 71: 12 blue, 7 red, 16 green; 2 red, 9 blue, 15 green; 1 red, 11 blue, 11 green; 15 red, 16 blue, 2 green
|
||||
Game 72: 1 blue, 11 red, 6 green; 1 red, 2 blue, 5 green; 4 green, 2 red; 2 green, 12 red
|
||||
Game 73: 1 blue, 1 red; 2 red, 4 blue, 2 green; 1 blue, 2 green, 10 red; 8 red
|
||||
Game 74: 12 red, 1 green, 4 blue; 1 red, 5 blue, 1 green; 11 green, 16 red, 7 blue; 7 red, 1 blue, 1 green; 12 red, 11 green, 12 blue; 11 green, 6 red
|
||||
Game 75: 12 green, 8 red, 3 blue; 7 red, 10 green; 1 green, 7 blue, 1 red
|
||||
Game 76: 4 green, 1 red, 3 blue; 7 blue, 3 green, 3 red; 4 blue, 2 red, 3 green; 4 blue, 1 green
|
||||
Game 77: 2 green, 12 blue, 10 red; 5 blue, 7 red; 2 red, 6 green; 1 blue, 2 red, 6 green
|
||||
Game 78: 2 green, 4 blue, 4 red; 8 green, 10 red, 10 blue; 5 green, 8 blue, 10 red; 6 green, 2 red
|
||||
Game 79: 3 green, 2 blue, 11 red; 8 red, 11 green, 1 blue; 1 blue, 16 red; 5 red, 7 green, 16 blue; 12 red, 7 green, 9 blue; 4 red, 20 blue, 12 green
|
||||
Game 80: 3 red, 5 green; 2 blue, 4 green; 2 red, 12 green, 4 blue; 10 green, 1 blue, 1 red; 4 blue, 3 red
|
||||
Game 81: 1 blue, 1 green, 1 red; 5 green, 3 red, 1 blue; 1 blue, 6 green; 1 green; 1 red, 5 green, 2 blue; 1 blue, 1 red, 3 green
|
||||
Game 82: 7 green, 10 blue, 3 red; 10 green, 12 red, 12 blue; 18 red, 8 green, 14 blue; 3 red, 3 green, 10 blue; 3 red, 1 blue, 5 green; 1 green, 8 blue
|
||||
Game 83: 9 red, 3 blue; 14 blue, 8 red, 3 green; 14 blue, 5 green, 4 red
|
||||
Game 84: 2 blue, 3 red, 6 green; 11 green, 2 red, 1 blue; 17 green, 3 blue, 3 red; 1 red, 1 blue; 1 red, 2 blue, 19 green
|
||||
Game 85: 3 green, 2 blue, 3 red; 4 red, 5 blue, 8 green; 15 green, 1 red, 9 blue; 12 green, 3 blue, 2 red
|
||||
Game 86: 15 green, 7 red, 10 blue; 2 blue, 2 red, 1 green; 4 red, 1 green, 9 blue; 7 red, 14 blue, 5 green
|
||||
Game 87: 1 green, 3 blue, 1 red; 2 blue, 1 green; 1 blue, 2 green, 1 red
|
||||
Game 88: 2 green, 6 blue, 5 red; 5 blue, 2 red; 3 red, 13 blue; 9 blue, 10 red, 1 green
|
||||
Game 89: 6 green, 10 red, 2 blue; 7 red, 1 blue, 8 green; 4 blue, 3 red, 5 green; 4 green, 4 blue, 10 red
|
||||
Game 90: 8 red, 7 blue; 4 green, 3 red, 1 blue; 5 blue, 2 green
|
||||
Game 91: 15 green, 14 red; 12 red, 16 green, 2 blue; 8 red, 10 green; 1 green, 6 red; 8 green, 12 red
|
||||
Game 92: 4 blue, 4 green, 9 red; 1 blue, 17 green; 1 green; 15 green, 3 blue, 12 red; 11 red, 1 blue, 7 green; 7 blue, 13 red, 8 green
|
||||
Game 93: 10 blue, 12 red; 10 blue, 11 green, 8 red; 1 blue, 11 green, 7 red; 10 blue, 15 red, 5 green; 11 red, 8 green, 9 blue; 10 green, 3 blue
|
||||
Game 94: 1 blue, 2 red; 4 red, 1 green, 5 blue; 3 red, 2 green; 2 green, 2 blue; 1 red, 5 blue, 1 green; 4 blue, 1 red, 2 green
|
||||
Game 95: 1 red, 1 blue, 3 green; 2 green, 6 blue; 1 green, 13 blue, 1 red; 3 green, 15 blue
|
||||
Game 96: 16 blue, 7 green, 5 red; 5 green, 5 blue, 6 red; 3 green, 17 blue, 10 red; 13 blue, 2 red, 1 green
|
||||
Game 97: 12 red; 1 blue, 6 red, 1 green; 9 red, 2 blue, 1 green; 1 green, 2 blue, 1 red; 15 red, 1 blue; 1 blue
|
||||
Game 98: 11 red, 6 blue, 13 green; 4 blue, 2 red, 12 green; 2 blue, 8 green, 10 red
|
||||
Game 99: 2 red, 1 blue; 4 green; 7 green, 1 blue, 1 red; 5 green, 2 red; 1 blue, 2 red, 9 green; 2 green, 3 red
|
||||
Game 100: 7 red, 11 blue; 10 red, 5 blue, 1 green; 7 red, 1 green, 13 blue; 9 red; 9 red, 19 blue; 9 red, 9 blue
|
||||
#+end_example
|
||||
|
||||
In this example, the calibration values are =29=, =83=, =13=, =24=, =42=, =14=, and =76=. Adding
|
||||
these together produces =281=.
|
||||
|
||||
*What is the sum of all of the calibration values?*
|
||||
|
||||
*** Puzzle Solution
|
||||
|
||||
#+NAME: day1-solution-2
|
||||
#+begin_src scheme
|
||||
(import (chicken string)
|
||||
(chicken irregex))
|
||||
|
||||
(define (extract-digits input-string)
|
||||
(irregex-extract '(or (/ #\0 #\9)
|
||||
"one"
|
||||
"two"
|
||||
"three"
|
||||
"four"
|
||||
"five"
|
||||
"six"
|
||||
"seven"
|
||||
"eight"
|
||||
"nine"
|
||||
; Duplicates
|
||||
"twone"
|
||||
"eightwo"
|
||||
"nineight"
|
||||
"eighthree"
|
||||
"threeight"
|
||||
"fiveight"
|
||||
"oneight"
|
||||
"sevenine")
|
||||
input-string))
|
||||
|
||||
(define (translate-code digit)
|
||||
(case (string->symbol digit)
|
||||
((|0|) "0")
|
||||
((|1| one) "1")
|
||||
((|2| two) "2")
|
||||
((|3| three) "3")
|
||||
((|4| four) "4")
|
||||
((|5| five) "5")
|
||||
((|6| six) "6")
|
||||
((|7| seven) "7")
|
||||
((|8| eight) "8")
|
||||
((|9| nine) "9")
|
||||
; Again, duplicates
|
||||
((twone) "21")
|
||||
((eightwo) "82")
|
||||
((nineight) "98")
|
||||
((eighthree) "83")
|
||||
((threeight) "38")
|
||||
((fiveight) "58")
|
||||
((oneight) "18")
|
||||
((sevenine) "79")
|
||||
))
|
||||
|
||||
(let ((lines (string-split input "\n")))
|
||||
(foldl + 0
|
||||
(map
|
||||
(lambda (line)
|
||||
(let ((digits (string->list
|
||||
(foldl string-append ""
|
||||
(map translate-code (extract-digits line))))))
|
||||
(if (= 0 (length digits))
|
||||
0
|
||||
(let ((first-digit (car digits))
|
||||
(last-digit (car (reverse digits))))
|
||||
(string->number (string first-digit last-digit))))))
|
||||
lines)))
|
||||
#+end_src
|
||||
|
||||
#+RESULTS: day1-solution-2
|
||||
: 53866
|
||||
|
|
|
|||
Loading…
Reference in New Issue