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Diffstat (limited to '')
| -rw-r--r-- | 2023/05-If_You_Give_A_Seed_A_Fertilizer/example | 33 | ||||
| -rw-r--r-- | 2023/05-If_You_Give_A_Seed_A_Fertilizer/first.hs | 65 | ||||
| -rw-r--r-- | 2023/05-If_You_Give_A_Seed_A_Fertilizer/input | 243 | ||||
| -rw-r--r-- | 2023/05-If_You_Give_A_Seed_A_Fertilizer/intervals.excalidraw.svg | 21 | ||||
| -rw-r--r-- | 2023/05-If_You_Give_A_Seed_A_Fertilizer/second.hs | 71 |
5 files changed, 433 insertions, 0 deletions
diff --git a/2023/05-If_You_Give_A_Seed_A_Fertilizer/example b/2023/05-If_You_Give_A_Seed_A_Fertilizer/example new file mode 100644 index 0000000..f756727 --- /dev/null +++ b/2023/05-If_You_Give_A_Seed_A_Fertilizer/example @@ -0,0 +1,33 @@ +seeds: 79 14 55 13 + +seed-to-soil map: +50 98 2 +52 50 48 + +soil-to-fertilizer map: +0 15 37 +37 52 2 +39 0 15 + +fertilizer-to-water map: +49 53 8 +0 11 42 +42 0 7 +57 7 4 + +water-to-light map: +88 18 7 +18 25 70 + +light-to-temperature map: +45 77 23 +81 45 19 +68 64 13 + +temperature-to-humidity map: +0 69 1 +1 0 69 + +humidity-to-location map: +60 56 37 +56 93 4 diff --git a/2023/05-If_You_Give_A_Seed_A_Fertilizer/first.hs b/2023/05-If_You_Give_A_Seed_A_Fertilizer/first.hs new file mode 100644 index 0000000..18d030b --- /dev/null +++ b/2023/05-If_You_Give_A_Seed_A_Fertilizer/first.hs @@ -0,0 +1,65 @@ +-- requires cabal install --lib megaparsec parser-combinators +module Main (main) where + +import Control.Applicative.Permutations +import Control.Monad (void, when) +import Data.Char qualified as C +import Data.Either +import Data.List qualified as L +import Data.Map qualified as M +import Data.Maybe +import Data.Set qualified as S +import Data.Void (Void) +import Text.Megaparsec +import Text.Megaparsec.Char + +exampleExpectedOutput = 35 + +data Map = Map Int Int Int deriving Show -- destination source range +data Mapping = Mapping String String [Map] deriving Show -- sourceStr destStr +data Input = Input [Int] [Mapping] deriving Show -- seeds mappings + +type Parser = Parsec Void String + +parseNumber :: Parser Int +parseNumber = read <$> some digitChar <* many (char ' ') + +parseMap :: Parser Map +parseMap = Map <$> parseNumber + <*> parseNumber + <*> parseNumber <* eol + +parseMapping :: Parser Mapping +parseMapping = Mapping <$> (some letterChar <* string "-to-") + <*> (some letterChar <* string " map:" <* eol) + <*> some parseMap <* optional eol + +parseInput' :: Parser Input +parseInput' = Input <$> (string "seeds: " *> some parseNumber <* some eol) + <*> some parseMapping <* eof + +parseInput :: String -> IO Input +parseInput filename = do + input <- readFile filename + case runParser parseInput' filename input of + Left bundle -> error $ errorBundlePretty bundle + Right input' -> return input' + +step :: [Map] -> Int -> Int +step [] n = n +step (Map dest src range:ms) n | n>=src && n<src+range = n - src + dest + | otherwise = step ms n + +stepMapping :: [Int] -> Mapping -> [Int] +stepMapping values (Mapping _ _ ms) = map (step ms) values + +compute :: Input -> Int +compute (Input values mappings) = minimum $ L.foldl' stepMapping values mappings + +main :: IO () +main = do + example <- parseInput "example" + let exampleOutput = compute example + when (exampleOutput /= exampleExpectedOutput) (error $ "example failed: got " ++ show exampleOutput ++ " instead of " ++ show exampleExpectedOutput) + input <- parseInput "input" + print $ compute input diff --git a/2023/05-If_You_Give_A_Seed_A_Fertilizer/input b/2023/05-If_You_Give_A_Seed_A_Fertilizer/input new file mode 100644 index 0000000..d93c0e7 --- /dev/null +++ b/2023/05-If_You_Give_A_Seed_A_Fertilizer/input @@ -0,0 +1,243 @@ +seeds: 1514493331 295250933 3793791524 105394212 828589016 654882197 658370118 49359719 4055197159 59237418 314462259 268880047 2249227634 74967914 2370414906 38444198 3291001718 85800943 2102534948 5923540 + +seed-to-soil map: +3352941879 1247490906 129850502 +1738919961 2189748071 56658550 +1795578511 292133467 518088747 +1519757661 1666834550 130335907 +1650093568 133993362 88826393 +2813914030 2262539545 40894545 +2698412916 2661705133 115501114 +2854808575 810222214 437268692 +410530961 1545057218 121777332 +0 242661076 10731898 +532308293 2303434090 61476099 +3292077267 1797170457 2282798 +2313667258 0 133993362 +2447660620 2410952837 250752296 +3294360065 253392974 38740493 +10731898 1377341408 167715810 +1457582089 2364910189 46042648 +593784392 3009289500 824592362 +3333100558 222819755 19841321 +1418376754 1799453255 39205335 +1503624737 2246406621 16132924 +178447708 2777206247 232083253 +3482792381 1838658590 351089481 + +soil-to-fertilizer map: +3513795976 4258851234 36116062 +3393453635 4148223693 110627541 +3504081176 3494735450 6350258 +2671742993 3596285367 235915393 +991290653 256764866 25867175 +2907658386 3330719253 68855819 +3336496635 4091266693 56957000 +3161141476 2536943456 80523019 +1961696534 304660310 29551079 +812996514 1560772632 178294139 +1562163347 2321959023 78904062 +31289107 1039870587 339682886 +1520029818 1928417376 42133529 +3510431434 3832200760 3364542 +3549912038 3272523584 58195669 +0 149071717 31289107 +3608107707 3501085708 5732766 +503523937 1739066771 189350605 +3071674583 3506818474 89466893 +3241664495 3996434553 94832140 +1708133363 454333361 253563171 +3813493721 3097084118 175439466 +1991247613 1970550905 351408118 +3613840473 2897430870 199653248 +2536943456 2762631333 134799537 +1641067409 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b/2023/05-If_You_Give_A_Seed_A_Fertilizer/intervals.excalidraw.svg @@ -0,0 +1,21 @@ +<svg version="1.1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 687.4921875 683" width="687.4921875" height="683" filter="invert(93%) hue-rotate(180deg)"> + <!-- svg-source:excalidraw --> + <!-- payload-type:application/vnd.excalidraw+json --><!-- payload-version:2 --><!-- payload-start 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\ No newline at end of file diff --git a/2023/05-If_You_Give_A_Seed_A_Fertilizer/second.hs b/2023/05-If_You_Give_A_Seed_A_Fertilizer/second.hs new file mode 100644 index 0000000..66d47db --- /dev/null +++ b/2023/05-If_You_Give_A_Seed_A_Fertilizer/second.hs @@ -0,0 +1,71 @@ +-- requires cabal install --lib megaparsec parser-combinators +module Main (main) where + +import Control.Applicative.Permutations +import Control.Monad (void, when) +import Data.Char qualified as C +import Data.Either +import Data.List qualified as L +import Data.Map qualified as M +import Data.Maybe +import Data.Set qualified as S +import Data.Void (Void) +import Text.Megaparsec +import Text.Megaparsec.Char + +exampleExpectedOutput = 46 + +data Range = Range Int Int deriving Show -- start range +data Map = Map Int Range deriving Show -- destination range +data Mapping = Mapping String String [Map] deriving Show -- sourceStr destStr +data Input = Input [Range] [Mapping] deriving Show -- seeds mappings + +type Parser = Parsec Void String + +parseNumber :: Parser Int +parseNumber = read <$> some digitChar <* many (char ' ') + +parseRange :: Parser Range +parseRange = Range <$> parseNumber + <*> parseNumber + +parseMap :: Parser Map +parseMap = Map <$> parseNumber + <*> parseRange <* eol + +parseMapping :: Parser Mapping +parseMapping = Mapping <$> (some letterChar <* string "-to-") + <*> (some letterChar <* string " map:" <* eol) + <*> some parseMap <* optional eol + +parseInput' :: Parser Input +parseInput' = Input <$> (string "seeds: " *> some parseRange <* some eol) + <*> some parseMapping <* eof + +parseInput :: String -> IO Input +parseInput filename = do + input <- readFile filename + case runParser parseInput' filename input of + Left bundle -> error $ errorBundlePretty bundle + Right input' -> return input' + +step :: [Map] -> Range -> [Range] +step [] n = [n] +step (Map dest (Range src range):ms) r@(Range n l) | n+l<=src || n>=src+range = step ms r + | n>=src && n+l<=src+range = [Range (n-src+dest) l] + | n>=src = Range (n-src+dest) (range+src-n) : step ms (Range (src+range) (l-range-src+n)) + | otherwise = Range dest (l-src+n) : step ms (Range n (src-n)) + +stepMapping :: [Range] -> Mapping -> [Range] +stepMapping ranges (Mapping _ _ ms) = concatMap (step ms) ranges + +compute :: Input -> Int +compute (Input ranges mappings) = minimum $ map (\(Range start _) -> start) $ L.foldl' stepMapping ranges mappings + +main :: IO () +main = do + example <- parseInput "example" + let exampleOutput = compute example + when (exampleOutput /= exampleExpectedOutput) (error $ "example failed: got " ++ show exampleOutput ++ " instead of " ++ show exampleExpectedOutput) + input <- parseInput "input" + print $ compute input |
