.gitignore

@@ -1,8 +1,7 @@
 result*
 *.cabal
 dist-newstyle
-*.eventlog*
+*.eventlog
 *.prof
 *.dot
 *.pdf
-aoc24-debug.*

Main.hs

@@ -12,7 +12,6 @@ import Day7
 import Day8
 import Day9
 import Day10
-import Day11
 
 main :: IO ()
 main = do
@@ -35,7 +34,5 @@ main = do
   -- Day8.main
   -- putStrLn "Day 9"
   -- Day9.main
-  -- putStrLn "Day 10"
-  -- Day10.main
-  putStrLn "Day 11"
-  Day11.main
+  putStrLn "Day 10"
+  Day10.main

flake.nix

@@ -28,7 +28,6 @@
             ghcid
             cabal-install
             fourmolu
-            eventlog2html
           ];
         # Change the prompt to show that you are in a devShell
         shellHook = ''

inputs/day11.input

@@ -1 +0,0 @@
-5910927 0 1 47 261223 94788 545 7771

package.yaml

@@ -1,6 +1,6 @@
 name: aoc24
 
-ghc-options: -Wall -threaded -O2
+ghc-options: -Wall -threaded
 
 default-extensions:
   - OverloadedStrings
@@ -25,7 +25,6 @@ dependencies:
   - unordered-containers
   - utility-ht
   - vector
-  - MemoTrie
 
 executables:
   aoc24:
@@ -34,7 +33,7 @@ executables:
       - aoc24
   aoc24-debug:
     main: Main.hs
-    ghc-options: -Wall -threaded -O2 -rtsopts -prof -auto-all #-fprof-auto
+    ghc-options: -Wall -threaded -rtsopts -prof #-fprof-auto
     dependencies:
       - aoc24
 
@@ -51,7 +50,7 @@ library:
     - Day8
     - Day9
     - Day10
-    - Day11
+    # - Day11
     # - Day12
     # - Day13
     # - Day14

src/Day11.hs

@@ -1,74 +0,0 @@
-{-# LANGUAGE FlexibleInstances #-}
-{-# LANGUAGE OverloadedStrings #-}
-
-module Day11 where
-
-import Data.Attoparsec.Text (Parser, decimal, parseOnly, sepBy)
-import Data.Function (fix)
-import qualified Data.Text.IO as T
-import Data.Vector (Vector)
-import qualified Data.Vector as V
-import Debug.Trace
-
-parseInput :: Parser [Int]
-parseInput = decimal `sepBy` " "
-
--- 1. If the stone is engraved with the number 0, it is replaced by a stone
--- engraved with the number 1.
--- 2. If the stone is engraved with a number that has an even number of digits,
--- it is replaced by two stones. The left half of the digits are engraved on
--- the new left stone, and the right half of the digits are engraved on the
--- new right stone. (The new numbers don't keep extra leading zeroes: 1000
--- would become stones 10 and 0.)
--- 3. If none of the other rules apply, the stone is replaced by a new stone; the
--- old stone's number multiplied by 2024 is engraved on the new stone.
-applyRule :: Int -> Vector Int
-applyRule 0 = whnfElements $ V.singleton 1
-applyRule n
-  | even leng && n > 9 =
-      whnfElements $ V.fromList [n `div` 10 ^ half, n `mod` 10 ^ half]
-  where
-    half :: Int
-    half = leng `div` 2
-    leng :: Int
-    leng = ceiling (logBase 10 (fromIntegral n) :: Float)
-applyRule n = whnfElements $ V.singleton $ n * 2024
-
-whnfElements :: Vector a -> Vector a
-whnfElements v = V.foldl' (flip seq) () v `seq` v
-
-solveA :: Vector Int -> Int
-solveA = V.length . curry iterThis 25
-
-solveA' :: [Int] -> Int
-solveA' = sum . map (lenMemo 25)
-
-iterThis :: (Int, Vector Int) -> Vector Int
-iterThis (0, vx) = vx
-iterThis (n, vx) = iterThis (n - 1, whnfElements $ V.concatMap applyRule vx)
-
-len :: (Int -> Int -> Int) -> Int -> Int -> Int
-len _ 0 _ = 1
-len f i x = traceShow i $ sum (fmap (f (i - 1)) (applyRule x))
-
-memoize :: (Int -> a) -> (Int -> a)
-memoize f = (map f [0 ..] !!)
-
-lenMemo :: Int -> Int -> Int
-lenMemo = fix (memoize . len)
-
-solveB :: [Int] -> Int
-solveB = sum . map (lenMemo 75)
-
-inputEx :: [Int]
-inputEx = [125, 17]
-
-main :: IO ()
-main = do
-  Right input <- parseOnly parseInput <$> T.readFile "inputs/day11.input"
-  putStrLn "Part 1"
-  print $ solveA $ V.fromList inputEx
-  print $ solveA $ V.fromList input
-  print $ solveA' input
-  putStrLn "Part 2"
-  print $ solveB input