{-# LANGUAGE OverloadedStrings #-}
module Main where

import Data.Maybe
import qualified Data.ByteString.Char8 as C
import Control.Monad(forM_)
import Data.Int
import Data.List
import Data.Array
import Data.Word
import Data.Bits
import qualified Data.IntMap as IntMap
import qualified Data.Map as Map
import Data.Functor
import Data.Tuple

yes :: C.ByteString
yes = "YES"

no :: C.ByteString
no = "NO"

getInts :: IO [Int]
getInts = do
  ss <- C.getLine
  return $ map (fst . fromJust . C.readInt) $ C.words ss

getIntss :: Int -> IO [[Int]]
getIntss 0 = return []
getIntss n = do
  xs <- getInts
  xss <- getIntss (n - 1)  
  return $ xs : xss

-- end standard template --

toPair :: [a] -> (a,a)
toPair xs = ((xs !! 0), (xs !! 1))

main :: IO ()
main = do
  [n,m] <- getInts
  xss <- getIntss m
  let res = solve n m xss
  print res

solve :: Int -> Int -> [[Int]] -> Int
solve n m xss = res
  where
    as = accumArray (||) False ((0,0),(n-1,n-1)) $ zip ((toPair <$> xss) ++ (swap.toPair <$> xss)) (repeat True)
    ys = [f n1 n2 n3 n4 | n1 <- ts, n2 <- ts, n3 <- ts, n4 <- ts]
    ts = [0..n-1]
    f :: Int -> Int -> Int -> Int -> Bool
    f n1 n2 n3 n4 = as ! (n1, n2) && as ! (n2, n3) && as ! (n3, n4) && as ! (n4, n1) &&
                    not (as ! (n1, n3)) && not (as ! (n2, n4)) && n1 /= n3 && n2 /= n4
    t = length $ filter (==True) ys
    res = t `div` 8