Day7: Part 1 works
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import Data.List.Split
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import Data.Char as Char
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import Data.List as List
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main = do
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software <- getList <$> getContents
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--let output = operation state state 0 input []
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let combs = getComb [4,3,2,1,0]
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let output = List.maximum ( map (\x-> calcthruster software x) combs )
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-- let output = calcthruster software [4,3,2,1,0]
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putStrLn (show output)
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getList :: String -> [Int]
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getList = map read . splitOn ","
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getComb :: [Int] -> [[Int]]
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getComb array = filter ((5==).length.(List.nub)) $ mapM (const array) [1..5]
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calcthruster :: [Int] -> [Int] -> Int
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calcthruster software (p1:p2:p3:p4:p5:_) = do
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let outputA = operation software software 0 [p1, 0] []
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let outputB = operation software software 0 [p2, last outputA] []
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let outputC = operation software software 0 [p3, last outputB] []
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let outputD = operation software software 0 [p4, last outputC] []
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let outputE = operation software software 0 [p5, last outputD] []
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last outputE
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operation :: [Int] -> [Int] -> Int -> [Int] -> [Int] -> [Int]
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operation (99:_) state index input output =
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output
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operation (op:x:y:z:_) state index input output
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| last (digits op) == 1 = do
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let newindex = index + 4
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let newstate = add (fillup (revertdigs op) 5) x y z state
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operation (drop newindex newstate) newstate newindex input output
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| last (digits op) == 2 = do
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let newindex = index + 4
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let newstate = mult (fillup (revertdigs op) 5) x y z state
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operation (drop newindex newstate) newstate newindex input output
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| last (digits op) == 3 = do
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let newindex = index + 2
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let newstate = put (fillup (revertdigs op) 3) x (head input) state
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let newinput = drop 1 input
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operation (drop newindex newstate) newstate newindex newinput output
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| last (digits op) == 4 = do
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let newindex = index + 2
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let newoutput = out (fillup (revertdigs op) 3) output x state
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let newinput = drop 1 input
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operation (drop newindex state) state newindex input newoutput
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| (last (digits op) == 5 ) = do
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let newindex = jumpif (fillup (revertdigs op) 4) x y index state
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operation (drop newindex state) state newindex input output
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| (last (digits op) == 6 ) = do
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let newindex = jumpifnot (fillup (revertdigs op) 4) x y index state
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operation (drop newindex state) state newindex input output
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| (last (digits op) == 7 ) = do
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let newindex = index + 4
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let newstate = lessthan (fillup (revertdigs op) 5) x y z state
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operation (drop newindex newstate) newstate newindex input output
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| (last (digits op) == 8 ) = do
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let newindex = index + 4
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let newstate = equal (fillup (revertdigs op) 5) x y z state
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operation (drop newindex newstate) newstate newindex input output
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add :: [Int] -> Int -> Int -> Int -> [Int] -> [Int]
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add (op1:op2:m1:m2:m3:_) p1 p2 p3 state =
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Main.insert state sum p3
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where
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sum = (getValue m1 p1 state) + (getValue m2 p2 state)
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mult :: [Int] -> Int -> Int -> Int -> [Int] -> [Int]
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mult (op1:op2:m1:m2:m3:_) p1 p2 p3 state =
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Main.insert state sum p3
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where
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sum = (getValue m1 p1 state) * (getValue m2 p2 state)
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put :: [Int] -> Int -> Int -> [Int] -> [Int]
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put(op1:op2:m1:_) p1 input state =
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Main.insert state input p1
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out :: [Int] -> [Int] -> Int -> [Int] -> [Int]
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out (op1:op2:m1:_) output p1 state =
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output ++ [(getValue m1 p1 state)]
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jumpif :: [Int] -> Int -> Int -> Int -> [Int] -> Int
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jumpif (op1:op2:m1:m2:_) p1 p2 index state
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| (getValue m1 p1 state) /= 0 = getValue m2 p2 state
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| otherwise = index + 3
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jumpifnot :: [Int] -> Int -> Int -> Int -> [Int] -> Int
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jumpifnot (op1:op2:m1:m2:_) p1 p2 index state
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| (getValue m1 p1 state) == 0 = getValue m2 p2 state
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| otherwise = index + 3
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lessthan :: [Int] -> Int -> Int -> Int -> [Int] -> [Int]
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lessthan (op1:op2:m1:m2:m3:_) p1 p2 p3 state
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| (getValue m1 p1 state) < (getValue m2 p2 state) = Main.insert state 1 p3
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| otherwise = Main.insert state 0 p3
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equal :: [Int] -> Int -> Int -> Int -> [Int] -> [Int]
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equal (op1:op2:m1:m2:m3:_) p1 p2 p3 state
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| (getValue m1 p1 state) == (getValue m2 p2 state) = Main.insert state 1 p3
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| otherwise = Main.insert state 0 p3
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insert :: [Int] -> Int -> Int -> [Int]
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insert xs value index = do
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let split = splitAt index xs
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(fst split)++ [value] ++ (drop 1 (snd split))
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digits :: Int -> [Int]
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digits = map Char.digitToInt . show
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revertdigs :: Int -> [Int]
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revertdigs 0 = []
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revertdigs x = x `mod` 10 : revertdigs (x `div` 10)
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fillup :: [Int] -> Int -> [Int]
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fillup array x = array ++ (replicate (x - (length array)) 0)
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getValue :: Int -> Int -> [Int] -> Int
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getValue 0 index array = array !! index
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getValue 1 index array = index
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