Quest 3: The Deepest Fit

  • Keep top level comments as only solutions, if you want to say something other than a solution put it in a new post. (replies to comments can be whatever)
  • You can send code in code blocks by using three backticks, the code, and then three backticks or use something such as https://topaz.github.io/paste/ if you prefer sending it through a URL

Link to participate: https://everybody.codes/

Also, don’t wait for me to make these posts, feel free to post yourself :)

  • VegOwOtenks@lemmy.world
    2·
    8 days ago

    I was scared of a hard combinatorial puzzle day, but this was a breeze.

    {-# LANGUAGE TupleSections #-}
module Main (main) where
import Control.Monad ((<$!>))
import qualified Data.Text.IO as TextIO
import Data.Text (Text)
import qualified Data.Text as Text
import qualified Data.IntSet as IntSet
import Control.Arrow ((>>>))
import qualified Data.List as List
import qualified Data.IntMap as IntMap

part1 :: [IntSet.Key] -> IntSet.Key
part1 = IntSet.fromList
  >>> IntSet.foldl (+) 0

part2 :: [IntSet.Key] -> IntSet.Key
part2 = IntSet.fromList
  >>> IntSet.toAscList
  >>> take 20
  >>> sum

part3 :: [IntMap.Key] -> Int
part3 = List.map (, 1)
  >>> IntMap.fromListWith (+)
  >>> IntMap.toList
  >>> List.map snd
  >>> maximum

main :: IO ()
main = do
  sizes <- map (read . Text.unpack) . Text.split (== ',') <$!> TextIO.getLine
  print $ part1 sizes
  print $ part2 sizes
  print $ part3 sizes