Solve 2023-02

data/Y2023/D02/riddle

@@ -0,0 +1,100 @@
+Game 1: 7 blue, 6 green, 3 red; 3 red, 5 green, 1 blue; 1 red, 5 green, 8 blue; 3 red, 1 green, 5 blue
+Game 2: 9 green, 1 blue, 12 red; 1 blue, 18 green, 8 red; 2 blue, 6 green, 13 red; 3 blue, 13 red, 7 green; 5 blue, 4 red, 4 green; 6 blue, 7 green, 4 red
+Game 3: 5 blue, 9 red, 14 green; 10 green, 3 blue; 11 red, 2 blue, 8 green; 5 red, 2 blue; 5 blue, 7 green, 8 red
+Game 4: 2 red, 3 blue, 2 green; 17 green, 6 blue, 1 red; 3 blue, 5 green, 1 red; 4 red, 1 blue, 16 green; 5 red, 4 blue, 13 green; 14 green, 5 blue, 6 red
+Game 5: 3 red, 17 green, 10 blue; 9 blue, 5 green; 14 green, 9 blue, 11 red
+Game 6: 4 green, 18 blue, 3 red; 6 green, 8 blue, 9 red; 4 green, 9 blue, 7 red; 9 red, 1 green, 12 blue
+Game 7: 1 blue, 14 green; 1 red, 4 blue, 15 green; 3 blue, 6 green; 3 blue, 2 green, 1 red; 1 red, 3 green, 1 blue
+Game 8: 10 red, 3 blue, 3 green; 5 blue, 7 red, 3 green; 3 red, 3 green, 11 blue; 1 red, 7 green, 10 blue; 13 blue, 5 green, 5 red; 1 green, 17 blue, 3 red
+Game 9: 1 blue, 6 green; 7 green, 2 red; 3 red, 2 green; 1 blue, 4 red, 3 green; 7 green, 1 blue, 1 red
+Game 10: 14 green, 6 blue, 1 red; 8 green, 5 red, 1 blue; 8 green, 5 blue, 5 red; 2 green, 3 blue, 5 red
+Game 11: 1 blue, 2 green; 1 blue, 1 green, 7 red; 1 blue, 4 green, 7 red; 2 red, 2 green, 1 blue
+Game 12: 5 blue, 12 green, 12 red; 11 green, 3 red; 14 green, 3 blue, 18 red
+Game 13: 2 green, 6 red; 6 red, 5 blue; 7 red, 3 blue, 8 green; 7 red, 8 green; 3 blue, 2 green, 3 red; 1 blue, 8 red, 6 green
+Game 14: 18 green, 6 blue, 5 red; 5 blue, 15 red, 19 green; 7 green, 11 blue, 20 red; 5 red, 18 green, 7 blue
+Game 15: 3 red, 16 green, 1 blue; 11 green, 6 red, 1 blue; 12 green, 2 red; 17 green, 1 blue, 14 red
+Game 16: 3 red, 2 green, 5 blue; 1 green, 6 blue, 1 red; 1 green, 2 blue, 3 red; 1 blue, 1 red; 5 blue, 1 green, 2 red
+Game 17: 3 blue, 6 red; 1 blue, 2 red; 1 blue, 1 green, 7 red; 1 green, 7 red, 2 blue; 7 red, 1 blue; 1 green, 8 red, 1 blue
+Game 18: 6 green, 10 red; 6 red, 7 green; 10 red, 11 green; 10 red, 2 blue, 5 green
+Game 19: 2 blue; 1 blue, 4 green, 6 red; 7 green, 6 red, 2 blue; 2 blue, 5 red, 4 green; 1 green, 10 red
+Game 20: 6 red, 5 green, 10 blue; 5 blue, 5 green, 9 red; 7 blue, 3 green, 3 red; 9 blue, 12 red, 1 green
+Game 21: 4 red, 18 blue, 14 green; 3 green, 14 blue, 5 red; 5 green, 12 blue; 1 blue, 2 red, 1 green; 5 red, 11 green, 7 blue; 17 green, 4 red, 15 blue
+Game 22: 1 blue, 14 green, 4 red; 7 green, 10 red; 9 green, 1 blue, 9 red; 1 blue, 8 green, 5 red
+Game 23: 4 blue, 5 green, 2 red; 6 blue, 8 red, 4 green; 4 blue, 17 red, 14 green
+Game 24: 3 green, 8 blue; 3 blue, 5 green, 13 red; 17 red, 4 green
+Game 25: 19 red, 9 blue, 1 green; 3 green, 18 red, 6 blue; 1 green, 7 red, 7 blue; 8 blue, 1 red
+Game 26: 10 green, 12 blue, 2 red; 9 red; 10 blue, 12 green, 9 red
+Game 27: 2 blue, 8 green, 6 red; 5 green, 9 red; 4 red, 11 green
+Game 28: 10 blue, 20 red; 14 blue, 3 green, 2 red; 9 red, 12 blue, 1 green
+Game 29: 4 red, 1 blue, 2 green; 1 green, 6 red, 1 blue; 15 red
+Game 30: 1 red, 13 blue, 6 green; 3 blue, 4 green; 19 blue, 11 green; 1 red, 11 green, 14 blue
+Game 31: 10 red, 12 green; 12 green, 10 red; 2 blue, 15 red, 12 green; 2 green, 2 blue, 15 red; 9 green, 5 red, 2 blue
+Game 32: 5 blue, 5 green, 8 red; 5 green, 6 red; 5 blue, 8 red, 4 green; 5 green, 3 blue, 6 red
+Game 33: 1 red, 9 green, 5 blue; 17 green, 4 blue; 3 green, 2 blue; 10 green, 2 blue; 1 blue, 4 green; 2 green, 9 blue
+Game 34: 11 blue, 11 red, 9 green; 13 red, 3 blue, 5 green; 9 green, 12 blue, 5 red; 13 red, 8 blue, 5 green
+Game 35: 1 green, 3 red, 7 blue; 1 red, 3 green, 9 blue; 1 blue, 2 green, 1 red; 11 blue, 5 red, 6 green
+Game 36: 4 blue, 12 green, 16 red; 7 blue, 11 green; 8 green, 5 blue, 1 red; 14 green, 3 red
+Game 37: 13 red, 5 blue, 9 green; 1 red, 10 blue, 14 green; 1 green, 2 blue, 10 red; 13 red, 10 blue; 1 blue, 8 green
+Game 38: 3 red, 4 blue, 8 green; 1 red, 11 blue, 4 green; 13 blue, 8 green; 3 red, 3 green, 10 blue; 1 red, 1 blue, 1 green; 1 green, 2 red, 10 blue
+Game 39: 9 red, 7 blue, 1 green; 15 red, 4 green, 1 blue; 2 green, 8 blue, 7 red; 6 blue, 11 red; 12 red, 2 blue, 7 green
+Game 40: 13 red, 3 green, 1 blue; 3 green, 10 red; 16 red
+Game 41: 1 blue, 3 red; 7 blue, 5 red, 3 green; 4 red, 3 blue, 2 green; 2 blue, 5 red, 1 green; 3 green, 4 red, 3 blue; 5 blue, 2 red
+Game 42: 1 red, 4 green; 11 red, 4 green; 13 red; 1 blue, 10 red; 1 blue, 2 red, 4 green
+Game 43: 11 green, 13 red, 1 blue; 11 green, 9 red, 2 blue; 7 green; 13 green, 15 red; 1 blue, 14 green
+Game 44: 5 green, 14 blue, 15 red; 13 blue, 15 green; 9 green, 15 red, 6 blue
+Game 45: 16 red, 8 blue; 1 green, 4 blue, 6 red; 4 blue, 8 red; 12 red, 3 blue, 3 green; 2 green, 4 red, 4 blue; 2 green, 8 blue, 10 red
+Game 46: 12 blue, 3 green, 12 red; 9 red, 9 blue; 3 green, 12 red; 10 red, 6 green; 2 red, 7 blue
+Game 47: 9 green, 6 red; 1 blue, 7 red, 10 green; 1 green, 2 red; 1 red, 3 green
+Game 48: 9 blue, 5 green, 13 red; 14 green, 4 red; 15 red, 9 green, 1 blue; 4 blue, 6 red, 13 green; 9 green, 8 blue, 8 red
+Game 49: 5 blue, 3 red; 1 green, 2 red, 5 blue; 1 green, 7 blue; 3 green
+Game 50: 8 red, 6 green; 10 blue, 4 green, 6 red; 8 green, 11 blue, 9 red
+Game 51: 5 blue; 13 blue; 1 red, 2 blue, 1 green; 1 red, 8 blue
+Game 52: 7 blue; 1 red, 2 green, 12 blue; 1 red, 5 blue; 2 red, 7 blue, 4 green; 3 green, 2 red, 2 blue
+Game 53: 10 blue, 12 red; 3 green, 5 blue, 3 red; 14 red, 4 green, 7 blue; 1 red, 14 blue
+Game 54: 2 blue, 14 red, 3 green; 3 green, 7 red; 2 blue, 3 green, 9 red; 3 green, 7 red; 1 green, 14 red, 1 blue
+Game 55: 3 green, 9 red, 12 blue; 5 blue, 5 green, 2 red; 7 green, 14 red, 12 blue
+Game 56: 1 blue, 3 red, 4 green; 5 red, 8 green, 1 blue; 3 green, 1 blue, 2 red
+Game 57: 8 blue, 13 red, 2 green; 3 blue, 5 red; 7 red, 2 green; 2 red, 5 blue, 3 green; 1 green, 4 blue
+Game 58: 4 green, 3 red, 2 blue; 5 green, 2 blue, 10 red; 11 green, 1 red, 2 blue; 4 red, 5 green
+Game 59: 5 green; 4 green, 2 blue; 1 red, 9 green; 7 green, 2 blue; 16 green, 1 blue
+Game 60: 6 green, 5 blue, 1 red; 5 blue, 3 green, 6 red; 1 green, 5 blue, 14 red; 6 red, 4 blue, 3 green
+Game 61: 2 green, 6 red, 6 blue; 6 blue, 3 red; 1 green, 2 red, 2 blue; 1 red, 2 green; 5 red, 1 green, 2 blue; 2 green, 6 red, 6 blue
+Game 62: 18 green, 8 blue, 1 red; 8 green, 4 red; 13 blue, 1 red, 3 green; 7 blue, 2 green, 4 red; 4 blue, 12 green, 5 red; 12 green, 11 blue
+Game 63: 2 red, 3 blue; 10 green, 13 red, 1 blue; 11 red, 3 green, 4 blue
+Game 64: 1 green, 16 red; 17 blue, 9 red, 1 green; 14 red, 7 blue
+Game 65: 7 blue, 11 red, 11 green; 7 red, 11 green; 3 blue, 13 red, 11 green; 5 green, 6 blue; 11 blue, 8 red, 3 green
+Game 66: 3 blue, 1 green, 3 red; 5 blue, 2 green, 5 red; 1 blue, 2 green, 7 red; 2 blue, 6 red; 7 red, 2 green, 2 blue; 2 red
+Game 67: 1 blue, 6 red, 2 green; 1 blue, 10 green, 6 red; 8 red, 2 blue, 4 green; 7 green, 9 red, 1 blue; 8 red, 7 green; 5 green, 1 blue
+Game 68: 15 blue, 8 green, 2 red; 6 blue, 2 green; 5 red, 6 green, 8 blue; 6 red, 11 green, 7 blue; 1 red, 3 blue; 5 red, 6 green, 5 blue
+Game 69: 5 blue, 4 green; 1 green, 11 red, 9 blue; 4 green, 15 blue, 6 red; 11 blue, 4 green, 5 red; 8 red, 3 green; 5 blue, 8 red
+Game 70: 5 blue, 4 red, 8 green; 6 blue, 6 green; 14 blue, 7 red, 1 green; 2 green, 6 blue, 3 red; 7 red, 11 blue, 3 green
+Game 71: 13 red, 6 blue, 10 green; 7 red, 12 green; 9 green, 14 red, 2 blue
+Game 72: 9 red, 3 green, 3 blue; 8 red, 7 blue, 5 green; 3 blue, 2 green, 1 red; 1 red, 2 blue, 2 green; 10 red, 7 green, 6 blue
+Game 73: 4 green, 3 red; 1 red; 2 red, 2 blue, 2 green; 1 blue, 3 red, 1 green; 2 blue, 3 red, 2 green; 1 red, 1 blue
+Game 74: 12 green, 4 red, 4 blue; 3 red, 13 green; 1 red, 13 green, 1 blue; 1 red, 3 blue, 6 green; 6 blue, 5 red, 4 green; 7 blue, 5 green, 1 red
+Game 75: 11 red, 1 green; 12 blue, 1 red; 2 blue, 1 green, 4 red; 11 red; 12 red, 6 green, 10 blue; 4 green, 5 blue, 7 red
+Game 76: 2 blue, 5 red, 6 green; 1 red, 10 green, 11 blue; 7 red, 11 green; 4 red, 10 blue, 10 green; 7 blue, 16 green, 2 red
+Game 77: 2 blue, 11 red, 4 green; 6 green, 3 blue, 2 red; 2 blue, 2 red, 7 green; 8 red, 14 blue, 5 green; 5 green, 2 blue, 18 red
+Game 78: 9 red, 7 green, 6 blue; 12 blue, 6 red; 1 red, 15 blue, 7 green; 3 blue, 11 green, 1 red
+Game 79: 3 blue; 1 blue; 1 red, 1 blue, 1 green; 3 blue; 5 blue, 1 red; 1 blue, 1 green, 1 red
+Game 80: 18 blue, 13 green, 7 red; 18 blue, 3 green, 3 red; 2 red, 9 blue, 14 green
+Game 81: 11 blue, 6 green, 3 red; 8 green, 12 red, 10 blue; 5 red, 4 blue, 13 green
+Game 82: 2 blue, 3 red; 4 blue, 17 red; 9 red; 12 red; 1 green, 6 blue, 7 red; 20 red
+Game 83: 1 blue, 1 red; 3 red, 1 blue; 3 red, 5 green; 1 blue, 2 green, 4 red; 5 green, 3 blue, 2 red
+Game 84: 4 red, 2 blue, 2 green; 8 red, 10 blue; 1 green, 15 red, 8 blue
+Game 85: 15 green; 11 red, 2 blue, 5 green; 8 red, 2 blue, 12 green; 15 red, 10 green; 10 red, 15 green; 17 red, 1 blue, 11 green
+Game 86: 6 blue, 1 red; 2 green, 1 red, 8 blue; 2 green, 10 blue; 10 blue, 2 green; 1 red, 5 blue
+Game 87: 4 red, 4 blue; 18 red, 8 blue; 16 red; 4 red, 1 green, 3 blue; 14 red, 9 blue
+Game 88: 11 green, 7 blue, 4 red; 3 red; 2 blue, 12 red, 19 green; 13 red, 3 blue, 2 green
+Game 89: 1 green, 1 red; 1 blue, 1 red, 6 green; 6 green, 3 red; 5 green, 2 red, 6 blue; 7 blue, 2 red, 8 green; 1 red, 2 blue
+Game 90: 3 green, 3 red, 3 blue; 5 green, 2 blue, 3 red; 1 blue, 2 red; 11 green, 1 blue, 2 red; 1 green, 3 blue, 4 red
+Game 91: 7 blue, 2 red; 2 blue, 1 red, 1 green; 6 blue, 1 red; 1 red, 7 blue
+Game 92: 11 green, 16 blue; 17 red, 7 blue, 9 green; 11 green, 3 blue, 12 red; 2 blue, 1 green, 6 red
+Game 93: 6 red, 1 blue, 3 green; 1 blue, 8 red, 7 green; 3 red, 5 green; 1 red, 2 green; 3 red, 7 green; 2 green, 15 red, 1 blue
+Game 94: 7 blue, 2 red, 2 green; 9 blue, 4 red, 2 green; 9 blue, 5 red, 3 green; 1 blue, 4 red, 3 green; 4 red, 1 green, 7 blue; 9 blue, 3 green, 3 red
+Game 95: 1 blue, 2 green, 2 red; 6 green, 6 red, 1 blue; 3 blue, 5 red, 2 green; 1 blue; 5 green, 2 red, 2 blue
+Game 96: 3 blue, 6 red, 5 green; 5 blue, 8 green, 9 red; 2 red, 5 green, 1 blue; 6 green, 4 blue, 3 red; 2 green, 2 blue; 6 blue, 4 green
+Game 97: 6 green, 8 blue, 5 red; 9 green, 6 blue; 3 green, 3 blue; 2 blue, 10 green, 4 red
+Game 98: 11 blue, 1 green, 9 red; 5 green, 1 blue, 6 red; 13 blue, 6 green, 10 red; 6 blue, 4 green, 9 red
+Game 99: 4 red, 3 green, 3 blue; 6 blue, 4 green, 11 red; 3 green, 15 red; 1 blue, 6 green, 14 red
+Game 100: 14 green, 6 blue, 12 red; 2 green, 1 blue, 2 red; 12 red, 7 blue, 3 green; 1 blue, 12 red, 8 green

src/AoC/Y2023/D02.hs

@@ -1,6 +1,89 @@
-module AoC.Y2023.D02 (solve) where
+module AoC.Y2023.D02 where
 
 import AoC.Riddle
 
+import Data.Map (foldMapWithKey)
+import Data.Map qualified as M
+import Text.Megaparsec (Parsec, choice, parse, sepBy, sepEndBy1)
+import Text.Megaparsec.Char (char, eol, space1, string)
+import Text.Megaparsec.Char.Lexer qualified as L
+
+type Parser = Parsec Void Text
+
+data Cube = Red | Green | Blue
+  deriving stock (Eq, Ord, Enum, Show)
+
+parseText :: Parser a -> Text -> Either Text a
+parseText p t = case parse p "<inline>" t of
+  Right a -> pure a
+  Left e -> Left $ show e
+
+-- skip whitespace
+ws :: Parser ()
+ws = L.space space1 empty empty
+
+linewise :: Parser a -> Parser [a]
+linewise p = p `sepEndBy1` eol
+
+type Round = Map Cube Integer
+
+pRound :: Parser Round
+pRound = fromList <$> pCubes `sepBy` (char ',' >> ws)
+
+pCube :: Parser Cube
+pCube =
+  choice
+    [ Red <$ string "red"
+    , Green <$ string "green"
+    , Blue <$ string "blue"
+    ]
+
+pCubes :: Parser (Cube, Integer)
+pCubes = do
+  n <- L.decimal
+  _ <- space1
+  c <- pCube
+  pure (c, n)
+
+type Game = (Integer, [Round])
+
+pGame :: Parser Game
+pGame = do
+  _ <- string "Game" >> ws
+  n <- L.decimal
+  _ <- char ':' >> ws
+  rs <- pRound `sepBy` (char ';' >> ws)
+  pure (n, rs)
+
+pPuzzle :: Parser [Game]
+pPuzzle = linewise pGame
+
+isGameValid :: Game -> Bool
+isGameValid (_, rounds) = all isRoundValid rounds
+
+isRoundValid :: Round -> Bool
+isRoundValid = getAll . foldMapWithKey (\c n -> All $ cubesPossible c n)
+
+cubesPossible :: Cube -> Integer -> Bool
+cubesPossible Red = (<= 12)
+cubesPossible Green = (<= 13)
+cubesPossible Blue = (<= 14)
+
+minimumSet :: Game -> Round
+minimumSet (_, rounds) = foldr (M.unionWith max) M.empty rounds
+
+power :: Round -> Integer
+power = product . M.elems
+
 solve :: (MonadIO m) => Text -> m (Either Text Solution)
-solve _ = pure $ Left "not yet implemented"
+solve riddle = case parseText pPuzzle riddle of
+  Right puzzle ->
+    let
+      part1 :: Integer
+      part1 = sum . fmap fst . filter isGameValid $ puzzle
+
+      part2 :: Integer
+      part2 = sum . fmap (power . minimumSet) $ puzzle
+     in
+      pure $ Right [part1, part2]
+  Left e -> pure $ Left e

test/spec/AoCSpec/Y2023Spec.hs

@@ -8,3 +8,7 @@ spec = do
   describe "Day 1" do
     it "calculates correctly" do
       runAoC Y2023 D01 `shouldReturn` Right [54331, 54518]
+
+  describe "Day 2" do
+    it "calculates correctly" do
+      runAoC Y2023 D02 `shouldReturn` Right [2369, 66363]