Hi. I'm new to Haskell. I try to solve Euler Project for studying Haskell through Googling, reading books. There is a error in where sentence, but I can't fix this. maxEleList :: String -> String -> [Int] maxEleList xs ys = maxOfTwo upperList lowerList where upperList = map turpleSum $ zip (toIntList xs) (toIntList ys) lowerList = map turpleSum $ zip (toIntList xs) (tail $ toIntList ys) Error message is ~/maxPathSum.hs: line 4, column 75: Parse error Error message: Parse error: = Code: maxEleList xs ys = maxOfTwo upperList lowerList where upperList = map turpleSum $ zip (toIntList xs) (toIntList ys) > lowerList = map turpleSum $ zip (toIntList xs) (tail $ toIntList ys) How can I fix this? Thank you for your kind help. S. Chang ---------------- This code is for Euler project: problem 18, and whole code is like this... (Not yet finished...) maxEleList :: String -> String -> [Int] maxEleList xs ys = maxOfTwo upperList lowerList where upperList = map turpleSum $ zip (toIntList xs) (toIntList ys) lowerList = map turpleSum $ zip (toIntList xs) (tail $ toIntList ys) maxOfTwo :: [Int] -> [Int] -> [Int] maxOfTwo [] [] = [] maxOfTwo (x:xs) (y:ys) = max x y : maxOfTwo xs ys turpleSum :: (Int, Int) -> Int turpleSum (x, y) = x + y toIntList :: String -> [Int] toIntList = map (\x -> read x :: Int) . words rowData :: [[Int]] --rowData = reverse $ map (map (\x -> read x :: Int) . words) [r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15] rowData = map (map (\x -> read x :: Int) . words) [r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, r11, r12, r13, r14, r15] r1 = "75" r2 = "95 64" r3 = "17 47 82" r4 = "18 35 87 10" r5 = "20 04 82 47 65" r6 = "19 01 23 75 03 34" r7 = "88 02 77 73 07 63 67" r8 = "99 65 04 28 06 16 70 92" r9 = "41 41 26 56 83 40 80 70 33" r10 = "41 48 72 33 47 32 37 16 94 29" r11 = "53 71 44 65 25 43 91 52 97 51 14" r12 = "70 11 33 28 77 73 17 78 39 68 17 57" r13 = "91 71 52 38 17 14 91 43 58 50 27 29 48" r14 = "63 66 04 68 89 53 67 30 73 16 69 87 40 31" r15 = "04 62 98 27 23 09 70 98 73 93 38 53 60 04 23"