using System;

public class Hello
{
    public static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var n = int.Parse(line[0]);
        var k = long.Parse(line[1]);
        line = Console.ReadLine().Trim().Split(' ');
        var a = Array.ConvertAll(line, int.Parse);
        var count = 0;
        var change = true;
        while (change)
        {
            change = false;
            for (int i = 0; i < n; i++)
                if (a[i] != i + 1)
                {
                    swap(a, i, a[i] - 1);
                    count++;
                    change = true;
                }
        }
        Console.WriteLine(check(k, count) ? "YES" : "NO");
    }
    public static bool check(long k, int count)
    {
        if (count > k) return false;
        if ((k - count) % 2 == 0) return true;
        else return false;
    }

    public static void swap(int[] a, int p, int q)
    {
        var t = a[p];
        a[p] = a[q];
        a[q] = t;
    }
}