func main()
	var n: int :: cui@inputInt()
	var k: int :: cui@inputInt()
	
	var a: []int :: #[n]int
	for i(0, n - 1)
		do a[i] :: cui@inputInt() - 1
	end for
	
	var cnt: int :: 0
	for i(0, n - 1)
		if(a[i] <> i)
			var p: int :: a[i]
			while(p <> i)
				do cnt :+ 1
				var tmp: int :: a[p]
				do a[p] :: p
				do p :: tmp
			end while
		end if
	end for
	var ans: bool :: cnt <= k & cnt % 2 = k % 2
	do cui@print(ans ?("YES\n", "NO\n"))
end func