wip directory for each language

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diff --git a/haskell/wip/011-largest_product_in_a_grid.hs b/haskell/wip/011-largest_product_in_a_grid.hs
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+-- Largest product in a grid
+--
+-- Problem 11
+-- In the 20×20 grid below, four numbers along a diagonal line have been marked in red.
+--
+-- 08 02 22 97 38 15 00 40  00  75  04  05 07 78 52 12 50 77 91 08
+-- 49 49 99 40 17 81 18 57  60  87  17  40 98 43 69 48 04 56 62 00
+-- 81 49 31 73 55 79 14 29  93  71  40  67 53 88 30 03 49 13 36 65
+-- 52 70 95 23 04 60 11 42  69  24  68  56 01 32 56 71 37 02 36 91
+-- 22 31 16 71 51 67 63 89  41  92  36  54 22 40 40 28 66 33 13 80
+-- 24 47 32 60 99 03 45 02  44  75  33  53 78 36 84 20 35 17 12 50
+-- 32 98 81 28 64 23 67 10 _26  38  40  67 59 54 70 66 18 38 64 70
+-- 67 26 20 68 02 62 12 20  95 _63  94  39 63 08 40 91 66 49 94 21
+-- 24 55 58 05 66 73 99 26  97  17 _78  78 96 83 14 88 34 89 63 72
+-- 21 36 23 09 75 00 76 44  20  45  35 _14 00 61 33 97 34 31 33 95
+-- 78 17 53 28 22 75 31 67  15  94  03  80 04 62 16 14 09 53 56 92
+-- 16 39 05 42 96 35 31 47  55  58  88  24 00 17 54 24 36 29 85 57
+-- 86 56 00 48 35 71 89 07  05  44  44  37 44 60 21 58 51 54 17 58
+-- 19 80 81 68 05 94 47 69  28  73  92  13 86 52 17 77 04 89 55 40
+-- 04 52 08 83 97 35 99 16  07  97  57  32 16 26 26 79 33 27 98 66
+-- 88 36 68 87 57 62 20 72  03  46  33  67 46 55 12 32 63 93 53 69
+-- 04 42 16 73 38 25 39 11  24  94  72  18 08 46 29 32 40 62 76 36
+-- 20 69 36 41 72 30 23 88  34  62  99  69 82 67 59 85 74 04 36 16
+-- 20 73 35 29 78 31 90 01  74  31  49  71 48 86 81 16 23 57 05 54
+-- 01 70 54 71 83 51 54 69  16  92  33  48 61 43 52 01 89 19 67 48
+--
+-- The product of these numbers is 26 × 63 × 78 × 14 = 1788696.
+--
+-- What is the greatest product of four adjacent numbers in the same direction
+-- (up, down, left, right, or diagonally) in the 20×20 grid?
+
+
+main = do
+    -- print (largest_product grid)
+    print grid
+
+largest_product :: [[Int]] -> Int
+largest_product g = maximum [largest_row, largest_col, largest_diag]
+    where largest_row = 3
+          largest_col = 3
+          largest_diag = 3
+
+max4 :: [Int] -> Int
+max4 [x] = x
+max4 (x:xs) = max (sum (take 4 (x:xs))) (max4 xs)
+
+
+
+
+
+grid :: [[Int]]
+grid = map (map read) (map words (lines grid_str))
+grid_str = "08 02 22 97 38 15 00 40 00 75 04 05 07 78 52 12 50 77 91 08\n\
+           \49 49 99 40 17 81 18 57 60 87 17 40 98 43 69 48 04 56 62 00\n\
+           \81 49 31 73 55 79 14 29 93 71 40 67 53 88 30 03 49 13 36 65\n\
+           \52 70 95 23 04 60 11 42 69 24 68 56 01 32 56 71 37 02 36 91\n\
+           \22 31 16 71 51 67 63 89 41 92 36 54 22 40 40 28 66 33 13 80\n\
+           \24 47 32 60 99 03 45 02 44 75 33 53 78 36 84 20 35 17 12 50\n\
+           \32 98 81 28 64 23 67 10 26 38 40 67 59 54 70 66 18 38 64 70\n\
+           \67 26 20 68 02 62 12 20 95 63 94 39 63 08 40 91 66 49 94 21\n\
+           \24 55 58 05 66 73 99 26 97 17 78 78 96 83 14 88 34 89 63 72\n\
+           \21 36 23 09 75 00 76 44 20 45 35 14 00 61 33 97 34 31 33 95\n\
+           \78 17 53 28 22 75 31 67 15 94 03 80 04 62 16 14 09 53 56 92\n\
+           \16 39 05 42 96 35 31 47 55 58 88 24 00 17 54 24 36 29 85 57\n\
+           \86 56 00 48 35 71 89 07 05 44 44 37 44 60 21 58 51 54 17 58\n\
+           \19 80 81 68 05 94 47 69 28 73 92 13 86 52 17 77 04 89 55 40\n\
+           \04 52 08 83 97 35 99 16 07 97 57 32 16 26 26 79 33 27 98 66\n\
+           \88 36 68 87 57 62 20 72 03 46 33 67 46 55 12 32 63 93 53 69\n\
+           \04 42 16 73 38 25 39 11 24 94 72 18 08 46 29 32 40 62 76 36\n\
+           \20 69 36 41 72 30 23 88 34 62 99 69 82 67 59 85 74 04 36 16\n\
+           \20 73 35 29 78 31 90 01 74 31 49 71 48 86 81 16 23 57 05 54\n\
+           \01 70 54 71 83 51 54 69 16 92 33 48 61 43 52 01 89 19 67 48"