import Data.Int
import Data.List
import Data.Bits

factorial 0 = 1
factorial x = factorial (x-1) * x

checkBit :: [Int64] -> Int64 -> Bool
checkBit [] x = True
checkBit (a:as) x = checkBit as a && x == x .&. a

countGroup n x = factorial (n - popCount x)

main = do
    str1 <- getLine
    let [n, k] = map read $ words str1 :: [Int]
    str2 <- if k /= 0
        then getLine
        else return ("")
    let
        as = sort $ map read $ words str2 :: [Int64]
        result  | k == 0                            = factorial n
                | (checkBit as $ head as) == True   = countGroup (n + 1) $ last as
                | otherwise                         = 0
    print result