2022-23 part 1 in haskell
This commit is contained in:
parent
64286f54a7
commit
9ecef46ac2
GPG key ID:
F92E51B86E07177E
3 changed files with 195 additions and 0 deletions
7
2022/23-Unstable-Diffusion/example
Normal file
7
2022/23-Unstable-Diffusion/example
Normal file
|
|
@ -0,0 +1,7 @@
|
||||||
|
....#..
|
||||||
|
..###.#
|
||||||
|
#...#.#
|
||||||
|
.#...##
|
||||||
|
#.###..
|
||||||
|
##.#.##
|
||||||
|
.#..#..
|
||||||
117
2022/23-Unstable-Diffusion/first.hs
Normal file
117
2022/23-Unstable-Diffusion/first.hs
Normal file
|
|
@ -0,0 +1,117 @@
|
||||||
|
-- requires cabal install --lib megaparsec parser-combinators vector
|
||||||
|
module Main (main) where
|
||||||
|
import Control.Monad (void, when)
|
||||||
|
import Data.Functor
|
||||||
|
import Data.List qualified as L
|
||||||
|
import Data.Map qualified as M
|
||||||
|
import Data.Void (Void)
|
||||||
|
import Text.Megaparsec
|
||||||
|
import Text.Megaparsec.Char
|
||||||
|
import System.Exit (die)
|
||||||
|
|
||||||
|
exampleExpectedOutput = 110
|
||||||
|
|
||||||
|
type Input = M.Map (Int, Int) Bool -- True if there is an elf
|
||||||
|
|
||||||
|
type Parser = Parsec Void String
|
||||||
|
|
||||||
|
inputToList :: String -> [((Int, Int), Bool)]
|
||||||
|
inputToList = snd . L.foldl' nextElf ((0, 0), [])
|
||||||
|
where
|
||||||
|
nextElf :: ((Int, Int), [((Int, Int), Bool)]) -> Char -> ((Int, Int), [((Int, Int), Bool)])
|
||||||
|
nextElf ((x, y), acc) '\n' = ((0, y+1), acc)
|
||||||
|
nextElf ((x, y), acc) '.' = ((x+1, y), acc)
|
||||||
|
nextElf ((x, y), acc) '#' = ((x+1, y), acc ++ [((x, y), True)])
|
||||||
|
|
||||||
|
parseInput :: String -> IO Input
|
||||||
|
parseInput filename = do
|
||||||
|
input <- readFile filename
|
||||||
|
return $ M.fromList (inputToList input)
|
||||||
|
|
||||||
|
type Proposals = M.Map (Int, Int) (Int, Int, Bool)
|
||||||
|
|
||||||
|
firstHalfStep :: Input -> Int -> Proposals
|
||||||
|
firstHalfStep input iter = M.filter (\(_, _, e) -> e) $ M.foldrWithKey eval M.empty input
|
||||||
|
where
|
||||||
|
eval :: (Int, Int) -> Bool -> Proposals -> Proposals
|
||||||
|
eval (x, y) _ = eval' (x, y, 0)
|
||||||
|
eval' :: (Int, Int, Int) -> Proposals -> Proposals
|
||||||
|
eval' (x, y, 4) acc = acc
|
||||||
|
eval' (x, y, r) acc | alone = acc
|
||||||
|
| otherwise = case (iter + r) `mod` 4 of
|
||||||
|
0 -> if M.member (x-1, y-1) input || M.member (x, y-1) input || M.member (x+1, y-1) input
|
||||||
|
then next
|
||||||
|
else if M.member (x, y-1) acc
|
||||||
|
then M.insert (x, y-1) (x, y, False) acc -- two or more elves attempted to move to the same spot
|
||||||
|
else M.insert (x, y-1) (x, y, True) acc
|
||||||
|
1 -> if M.member (x-1, y+1) input || M.member (x, y+1) input || M.member (x+1, y+1) input
|
||||||
|
then next
|
||||||
|
else if M.member (x, y+1) acc
|
||||||
|
then M.insert (x, y+1) (x, y, False) acc -- two or more elves attempted to move to the same spot
|
||||||
|
else M.insert (x, y+1) (x, y, True) acc
|
||||||
|
2 -> if M.member (x-1, y-1) input || M.member (x-1, y) input || M.member (x-1, y+1) input
|
||||||
|
then next
|
||||||
|
else if M.member (x-1, y) acc
|
||||||
|
then M.insert (x-1, y) (x, y, False) acc -- two or more elves attempted to move to the same spot
|
||||||
|
else M.insert (x-1, y) (x, y, True) acc
|
||||||
|
3 -> if M.member (x+1, y-1) input || M.member (x+1, y) input || M.member (x+1, y+1) input
|
||||||
|
then next
|
||||||
|
else if M.member (x+1, y) acc
|
||||||
|
then M.insert (x+1, y) (x, y, False) acc -- two or more elves attempted to move to the same spot
|
||||||
|
else M.insert (x+1, y) (x, y, True) acc
|
||||||
|
where
|
||||||
|
alone = M.notMember (x-1, y-1) input
|
||||||
|
&& M.notMember (x, y-1) input
|
||||||
|
&& M.notMember (x+1, y-1) input
|
||||||
|
&& M.notMember (x-1, y) input
|
||||||
|
&& M.notMember (x+1, y) input
|
||||||
|
&& M.notMember (x-1, y+1) input
|
||||||
|
&& M.notMember (x, y+1) input
|
||||||
|
&& M.notMember (x+1, y+1) input
|
||||||
|
next = eval' (x, y, r+1) acc
|
||||||
|
|
||||||
|
secondHalfStep :: Input -> Proposals -> Input
|
||||||
|
secondHalfStep = M.foldrWithKey eval
|
||||||
|
where
|
||||||
|
eval :: (Int, Int) -> (Int, Int, Bool) -> Input -> Input
|
||||||
|
eval (x', y') (x, y, _) acc = M.insert (x', y') True $ M.delete (x, y) acc
|
||||||
|
|
||||||
|
compute :: Input -> Int -> Int
|
||||||
|
compute input imax = compute' 0 input
|
||||||
|
where
|
||||||
|
compute' :: Int -> Input -> Int
|
||||||
|
compute' i input | imax == i = (xmax - xmin + 1) * (ymax - ymin + 1) - M.size input
|
||||||
|
| otherwise = compute' (i+1) $ secondHalfStep input (firstHalfStep input i)
|
||||||
|
where
|
||||||
|
keys = M.keys input
|
||||||
|
xs = L.map fst keys
|
||||||
|
ys = L.map snd keys
|
||||||
|
xmax = maximum xs
|
||||||
|
xmin = minimum xs
|
||||||
|
ymax = maximum ys
|
||||||
|
ymin = minimum ys
|
||||||
|
|
||||||
|
main :: IO ()
|
||||||
|
main = do
|
||||||
|
example <- parseInput "example"
|
||||||
|
--putStr $ showMap example
|
||||||
|
let exampleOutput = compute example 10
|
||||||
|
when (exampleOutput /= exampleExpectedOutput) (die $ "example failed: got " ++ show exampleOutput ++ " instead of " ++ show exampleExpectedOutput)
|
||||||
|
input <- parseInput "input"
|
||||||
|
print $ compute input 10
|
||||||
|
|
||||||
|
--showMap :: Input -> String
|
||||||
|
--showMap input = printMap' xmin ymin ""
|
||||||
|
-- where
|
||||||
|
-- printMap' :: Int -> Int -> String -> String
|
||||||
|
-- printMap' x y acc | M.member (x, y) input = printMap' (x+1) y (acc ++ "#")
|
||||||
|
-- | y > ymax = acc
|
||||||
|
-- | x <= xmax = printMap' (x+1) y (acc ++ ".")
|
||||||
|
-- | otherwise = printMap' xmin (y+1) (acc ++ "\n")
|
||||||
|
-- keys = M.keys input
|
||||||
|
-- xs = L.map fst keys
|
||||||
|
-- ys = L.map snd keys
|
||||||
|
-- xmax = maximum xs
|
||||||
|
-- xmin = minimum xs
|
||||||
|
-- ymax = maximum ys
|
||||||
|
-- ymin = minimum ys
|
||||||
71
2022/23-Unstable-Diffusion/input
Normal file
71
2022/23-Unstable-Diffusion/input
Normal file
|
|
@ -0,0 +1,71 @@
|
||||||
|
.###.#.#.#..###.##.#.....#.####.####..##.#.##.#....##.###.#..####.##.#.
|
||||||
|
.###.#...######....##.#..###..#.#.##.#.######..##.#.....#...#.#.##.##..
|
||||||
|
.##....#..#...#..##.....##......#.#..#......#..#..###..#..##..#.#.##.#.
|
||||||
|
#####.###.##.#.##.#.#...##.##.#.#..####...#.#..####.#.######.###.######
|
||||||
|
#...#.#.#####....#.#.###..#####..####.#.#....###.#.####..##..###.####..
|
||||||
|
#.#.#.#####.....#....##....####.#..#...##.##..##..##..#..#...####.#..##
|
||||||
|
....#.#..####.#...#........##...##...#.##.##########...###..#####.#...#
|
||||||
|
.####.#...##.#..##....###.##..#.###.#.##..######.##.#.#.##....##..#....
|
||||||
|
..#...#...#..#####......#.....#.##..#.####.##...#####..#..###.#..##....
|
||||||
|
#..#.#.#....####...#..##..#...#..#.#####.#.##..###.#.#.#...#######.#...
|
||||||
|
.#.#.####....###...#..#.#...#.#.####..#..#........#..###....########.#.
|
||||||
|
#.##.#.##.#...#.##.###....##...####.###...#.##.##..##....#...####.#..#.
|
||||||
|
.#.#.#.#..###..#.####..######.##..#.#######...####.#.#.#.##...#.....###
|
||||||
|
#..###...##......#..#....#..#..##......#####...#.##.....#.###..#...#..#
|
||||||
|
.####...#.#....###.#.....#.##.#.....##...##.....#..#####..###.##.#.#.##
|
||||||
|
..#...#.#.#...##########..###.###....#..###....##..#.########.##.#.#.##
|
||||||
|
####..#..#.####...####..##.##.##....#..###.###.......##.......#.##...##
|
||||||
|
...#####..#.####.#.#.#.###..#..#..#.##.##..#.###.###.#...#.#.##.....#..
|
||||||
|
##..###.##.###.##.####.#.#.....##.##.#..###..####..########.###..###.##
|
||||||
|
#.#.#..#....###.#...#.#...#..###.###..#.##.##.####.##.##.##..#..###..##
|
||||||
|
#..###.....##.#####.###..##.###.#.....##.#....###..######..##.#.###...#
|
||||||
|
#.##..##.#.#.#.##.#..##..#..##..#....#..###.......###.####..##...#.#.#.
|
||||||
|
##...#..##..#.#..##.##...#.#.#..####.#..##...#.#...######....##.#...#..
|
||||||
|
#.###...#####..####..##..##.###..##.#.####..##.#.###.#.#..#......#.....
|
||||||
|
.#...#.#.###........#.#.#...#..####...#.#####.#####...#....###.##.###..
|
||||||
|
....###....####..##..###.##..##.##.#.###.##.#.#.....#.....###.##...##..
|
||||||
|
#....######.....#.#...#.#..###.....#....#..##.##.###..##....#.###...#..
|
||||||
|
#.#.#.#.#...#.#.#...#.#.....####.###.#####.#.##..###..#.#####.#......#.
|
||||||
|
.##.####...######.#.###.##.###..#.##..#.#.#....##.#.#####.#...####....#
|
||||||
|
.#.#.##..##..###.#.#....####....#......#..##..###..########...#.##.##.#
|
||||||
|
#.###.##...#....#..###..#......##..#....#.####..#.##..#.##.#.##.#...###
|
||||||
|
#..#....##.###..###..##..#...#......#..####.#.#.#######.#...#####..#..#
|
||||||
|
..#.###.#..###.###......#.####..###..#.#..#.#.....##...#..#.#.##.###...
|
||||||
|
...##.........#..###.##..#######.######....######.#####.#.#.#.#..######
|
||||||
|
###.##..###.#.####...###..#..#...#...##.#.#......#..#.###..#.#...#....#
|
||||||
|
...###....##....#.##.#...###....##.#...#..#...#.#.##..#..#..####....#.#
|
||||||
|
.#.#..#########....#.##.##..#.##..##.###..#.###..##.#..#.####.#.##.##..
|
||||||
|
##..####..###.#.....#.#.#.##...#.##....##.#.#.....##.....#..##.#.##.##.
|
||||||
|
#..#.######.#.###...#..#.#.###.##.##.#.###.....#.......####..#...###..#
|
||||||
|
.##..##.###.#.###.#######.#.#.#.##.#....#...#####....###.######..#..##.
|
||||||
|
#.####....#..#...###.....###..##...###....##.#..#..##...##..#.####..#..
|
||||||
|
..###.##.###.#.#....##.####.#.#...#.#####.####..#.#.#.###.##.###...####
|
||||||
|
##.##..#..##.....#####..####.##.#.#.##..##.#.#..##..#.##.#.#....####...
|
||||||
|
###.#.#....#...#...#.#...#.#..#.#.###.###.##..#..#..###.##..#.#...##...
|
||||||
|
...#.....#.##...##....##...##.#.#..#.##.#.#..##.####.#.##..#.......#...
|
||||||
|
#....####.#.....###.##.#.###.#####.##....#.##..#####.....#.##.##..###.#
|
||||||
|
.#..#..##.#..##.#.######.##...##...#.##..##..#.#.#..##.#....##...######
|
||||||
|
....##.##.#...#.###....##..#..#..#..#...#...####.##.########.###..##..#
|
||||||
|
###...####......#.#..#..#.##.####.#.##.#.##.#..##.#..###..####..#.#.###
|
||||||
|
..#####...#.#.....#....####.##..##.##..###...##.###..##.####.####..###.
|
||||||
|
..#.##.##...##..##.#..##.#.###...#.#..##.#.##.###.#.#.#.#.#..#..##.#..#
|
||||||
|
.#.....#..####..#...#.#..####.#####.#..###.##.###.###.#.......####.##..
|
||||||
|
.#.#####.#....#..##..#.###.####.#.....#..#.####..#.#.#....#.##.##..###.
|
||||||
|
.....#...#.#..#.#.#.#.##..####.##.##.###.#......#..#.##...####.#.#.#.#.
|
||||||
|
##...#..#..##..##..#...#.##.###....#..#..##..#.##.#.###.###.#....#.##..
|
||||||
|
#.##.##...#.....##...###.#####..###..#.#.#..#.#.....#####.###.#..##...#
|
||||||
|
.###..#.#.#...###.##...##...#..#.#.#...#.###....###......#.#.###..###.#
|
||||||
|
###..#...###...#.#.##.#..##.#.....#..##.#..#########..##.#.###.#.#.#...
|
||||||
|
.##.#.#.#.#...#...##.##..#.##..#########..#.##.###.##.####.#.##.####.##
|
||||||
|
##.#####...##.....##.....##....###...#....#...#.##.#..##.#...#.#.#...#.
|
||||||
|
##....#.#....##.##..###....####.#...######.#..##......#.####...#.#.##.#
|
||||||
|
#####.#...#.....###....#.##....#..#.##.#####.########.###.#..#.##.#..##
|
||||||
|
##..#.#..##.#.##...#...##.#####.###.####.#...##...###...##..#...###.###
|
||||||
|
#.##..#....######..#.###.....#.#.####.##..##.##.#####......#.#.###..###
|
||||||
|
.#####..####.#.##...###.....#######..######.#.##....#..##.##.##.##.#.##
|
||||||
|
...##.....#.###.####.#.###.#......##.#....#..###.....#.###.......####..
|
||||||
|
.#.########..#.#...###.#.##....#.##.####.#.##....#.###.#.####.#.#...##.
|
||||||
|
.###.#.#.#.#..#.##..#####..#######...#...#..######.....###...##.#.##.#.
|
||||||
|
.#.....##..#.#..##.#.#..#.#..##.#..#...##..######.#.########...###.#...
|
||||||
|
..###.##..#.##..#........#.#....###..#.....##.##.##..#.##..###.#...#.##
|
||||||
|
..#.####.######.#......#...###.#...##.#...###.###.#..###.#..##.#..####.
|
||||||
Loading…
Add table
Reference in a new issue