diff --git a/day15.hs b/day15.hs new file mode 100644 index 0000000..eb1f0fb --- /dev/null +++ b/day15.hs @@ -0,0 +1,223 @@ +import Data.List.Split +import Data.Char as Char +import Data.List as List +import Data.Either as Either +import Debug.Trace as Trace + +main = do + software <- getList <$> getContents + let brain = Amplifier software 0 0 [] [0] + let robot = Robot brain [] (0,0) 1 + let resultRobots = (runRobot robot ) + let winRobots = filter(\(Robot br pts pos dir) -> elem 2 (map(\(p,c) -> c) pts))resultRobots + let winRobotsLength = map(\(Robot br pts pos dir) -> length (filter(\(p,c) -> c == 1)pts))winRobots + putStrLn(show winRobotsLength) + putStrLn ("ELL") + +data Amplifier = Amplifier{ state :: [Int] + ,index :: Int + ,base :: Int + ,input :: [Int] + ,output :: [Int] + } deriving Show + +data Robot = Robot{ brain:: Amplifier + ,points:: [((Int,Int),Int)] + ,position:: (Int,Int) + ,direction :: Int + } deriving Show + +getBrain :: Robot -> Amplifier +getBrain (Robot brain points poisition direction) = brain + +createMap ::[((Int,Int),Int)]-> [Int] -> [[Int]] -> [[Int]] +createMap points (y:ys) output + |length ys > 0 = do + let fPoints = filter(\((a,b),c) -> b ==y ) points + let row = foldl createRow [] fPoints + let newoutput = output ++ [(row)] + createMap points ys newoutput + |otherwise = output + +createRow :: [Int] -> ((Int,Int),Int) -> [Int] +createRow row ((a,b),c) = Main.insert row c a + +runRobot :: Robot -> [Robot] +runRobot robot + | (length move) == 0 = [robot] + | (length move) == 1 = do + let newRobot = stepRobot robot $ move!!0 + runRobot newRobot + | otherwise = do + let newRobots = map(\mv -> stepRobot robot mv) move + foldl (++) [] $ map(\robot -> runRobot robot) newRobots + where move = getNextMove robot + +stepRobot :: Robot -> Int -> Robot +stepRobot (Robot brain points position direction) newDirection = do + let newBrain = step brain [newDirection] + let statusResponse = head(output newBrain) + let newPos = move position newDirection + let newPoints = (points) ++ [(newPos,statusResponse)] + if statusResponse == 0 || statusResponse == 2 + then Robot newBrain newPoints position newDirection + else Robot newBrain newPoints newPos newDirection + +move :: (Int,Int) -> Int -> (Int,Int) +move (x,y) direction + | direction == 1 = (x,y+1) + | direction == 4 = (x+1,y) + | direction == 2 = (x,y-1) + | direction == 3 = (x-1,y) + +getNextMove :: Robot -> [Int] +getNextMove (Robot brain points position direction) + |length points == 300 = [] + |length points > 0 && (snd $ last points) == 2 = [] + |otherwise = do + filterMoves (Robot brain points position direction) [1,2,3,4] + + +filterMoves :: Robot -> [Int] -> [Int] +filterMoves robot moves = filter(\x -> checkVisit robot x && checkWall robot x) moves + +checkVisit :: Robot -> Int -> Bool +checkVisit (Robot brain points position direction) mv = do + let newPos = move position mv + let visits = map(\(pos,c) -> pos) points + notElem newPos visits + +checkWall :: Robot -> Int -> Bool +checkWall (Robot brain points position direction) mv = do + let mvResult = head $ output (step brain [mv]) + mvResult /= 0 + +getList :: String -> [Int] +getList = map Prelude.read . splitOn "," + +step :: Amplifier -> [Int] -> Amplifier +step amp input = operation (drop (index amp) (state amp)) (state amp) (index amp) (base amp) input [] + +operation :: [Int] -> [Int] -> Int -> Int -> [Int] -> [Int] -> Amplifier +operation (99:_) state i base input output = + Amplifier state i base input [] +operation (op:xs) state i base input output + | last (digits op) == 1 = do + let newindex = i + 4 + let newstate = add (fillup (revertdigs op) 5) (xs!!0) (xs!!1) (xs!!2) base state + operation ((drop newindex newstate)) (newstate) newindex base input output + | last (digits op) == 2 = do + let newindex = i + 4 + let newstate = mult (fillup (revertdigs op) 5) (xs!!0) (xs!!1) (xs!!2) base state + operation ((drop newindex newstate)) (newstate) newindex base input output + | last (digits op) == 3 = do + if (length input) == 0 + then (Amplifier state i base input output) + else do + let newindex = i + 2 + let newstate = put (fillup (revertdigs op) 3) (xs!!0) (head input) base state + let newinput = drop 1 input + operation (drop newindex newstate) (newstate) newindex base newinput output + | last (digits op) == 4 = do + let newindex = i + 2 + let newoutput = out (fillup (revertdigs op) 3) output (xs!!0) base state + let newinput = drop 1 input + operation ((drop newindex state)) (state) newindex base input (newoutput) + | (last (digits op) == 5 ) = do + let newindex = jumpif (fillup (revertdigs op) 4) (xs!!0) (xs!!1) i base state + operation ((drop newindex state)) (state) newindex base input output + | (last (digits op) == 6 ) = do + let newindex = jumpifnot (fillup (revertdigs op) 4) (xs!!0) (xs!!1) i base state + operation ((drop newindex state)) (state) newindex base input output + | (last (digits op) == 7 ) = do + let newindex = i + 4 + let newstate = lessthan (fillup (revertdigs op) 5) (xs!!0) (xs!!1) (xs!!2) base state + operation ((drop newindex newstate)) (newstate) newindex base input output + | (last (digits op) == 8 ) = do + let newindex = i + 4 + let newstate = equal (fillup (revertdigs op) 5) (xs!!0) (xs!!1) (xs!!2) base state + operation ((drop newindex newstate)) (newstate) newindex base input output + | (last (digits op) == 9 ) = do + let newindex = i + 2 + let fullop = (fillup (revertdigs op) 3) + let newbase = base + (getValue (fullop!!2) (xs!!0) base state) + (operation ((drop newindex state)) (state) newindex newbase input output) + +add :: [Int] -> Int -> Int -> Int -> Int -> [Int] -> [Int] +add (op1:op2:m1:m2:m3:_) p1 p2 p3 base state = + Main.insert state sum (getIndex m3 p3 base) + where + sum = (getValue m1 p1 base state) + (getValue m2 p2 base state) + +mult :: [Int] -> Int -> Int -> Int -> Int -> [Int] -> [Int] +mult (op1:op2:m1:m2:m3:_) p1 p2 p3 base state = + Main.insert state sum (getIndex m3 p3 base) + where + sum = (getValue m1 p1 base state) * (getValue m2 p2 base state) + +put :: [Int] -> Int -> Int -> Int -> [Int] -> [Int] +put(op1:op2:m1:_) p1 input base state = + Main.insert state input (getIndex m1 p1 base) + + +out :: [Int] -> [Int] -> Int -> Int -> [Int] -> [Int] +out (op1:op2:m1:_) output p1 base state = + output ++ [(getValue m1 p1 base state)] + +jumpif :: [Int] -> Int -> Int -> Int -> Int -> [Int] -> Int +jumpif (op1:op2:m1:m2:_) p1 p2 index base state + | (getValue m1 p1 base state) /= 0 = getValue m2 p2 base state + | otherwise = index + 3 + +jumpifnot :: [Int] -> Int -> Int -> Int -> Int -> [Int] -> Int +jumpifnot (op1:op2:m1:m2:_) p1 p2 index base state + | (getValue m1 p1 base state) == 0 = getValue m2 p2 base state + | otherwise = index + 3 + +lessthan :: [Int] -> Int -> Int -> Int -> Int -> [Int] -> [Int] +lessthan (op1:op2:m1:m2:m3:_) p1 p2 p3 base state + | (getValue m1 p1 base state) < (getValue m2 p2 base state) = + Main.insert state 1 (getIndex m3 p3 base) + | otherwise = Main.insert state 0 (getIndex m3 p3 base) + +equal :: [Int] -> Int -> Int -> Int -> Int -> [Int] -> [Int] +equal (op1:op2:m1:m2:m3:_) p1 p2 p3 base state + | (getValue m1 p1 base state ) == (getValue m2 p2 base state ) = + Main.insert state 1 (getIndex m3 p3 base) + | otherwise = Main.insert state 0 (getIndex m3 p3 base) + + +insert :: [Int] -> Int -> Int -> [Int] +insert xs value index + | index < length xs = do + let split = splitAt index xs + (fst split)++ [value] ++ (drop 1 (snd split)) + | otherwise = do + let longState = xs ++ (replicate (index - length xs) 0) + let split = splitAt index longState + (fst split)++ [value] ++ (drop 1 (snd split)) + +read :: [Int] -> Int -> Int +read xs index + | index < length xs = xs!!index + | otherwise = 0 + +digits :: Int -> [Int] +digits = map Char.digitToInt . show + +revertdigs :: Int -> [Int] +revertdigs 0 = [] +revertdigs x = x `mod` 10 : revertdigs (x `div` 10) + +fillup :: [Int] -> Int -> [Int] +fillup array x = array ++ (replicate (x - (length array)) 0) + +getValue :: Int -> Int -> Int -> [Int] -> Int +getValue 0 p base array = Main.read array p +getValue 1 p base array = p +getValue 2 p base array = Main.read array (base + p) + +getIndex :: Int -> Int -> Int -> Int +getIndex m p base + | m == 0 = p + | m == 2 = p + base