{-# 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

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 --


main :: IO ()
main = do
  [n,k] <- getInts
  xs <- getInts
  let res = solve n k xs
  C.putStrLn res

solve :: Int -> Int -> [Int] -> C.ByteString
solve n k xs = if odd t == odd k && t <= k then yes else no
  where
    as = listArray (1,n) xs
    bs = array (1,n) [(i, f i i) | i <- [1..n]]
      where
        f s x = if (as ! x) == s then x else if (as ! x) < s then bs ! (as ! x) else min x $ f s (as ! x)
    t = foldr (\i -> \m -> if bs ! i /= i then m + 1 else m) 0 [1..n]