[Haskell] Please help!!!

What's wrong?? greatest common divisor code: mdc :: Int-> Int -> Int mdc _ 1 = 1 mdc 1 _ = 1 mdc x y |x > y = mdc (x-y) y |y > x = mdc (y-x) x |x==y = x mdcl :: [Int]-> [Int] mdcl []=[] mdcl l = mdcl ([mdc (tira(take 1 l)) (tira(take 1 (drop 1 l)))]++ drop 2 l) gcdl :: [Int] -> Int gcdl l = tira l tira :: [Int] -> Int tira []=0 tira [x]=x -- View this message in context: http://www.nabble.com/Please-help%21%21%21-tf3895195.html#a11042870 Sent from the Haskell - Haskell mailing list archive at Nabble.com.