using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Competitive
{
    internal class Solution
    {
        public long N, K;
        public int[] D;
        public bool[] F;

        public void Run()
        {
            {
                var line = Input.ReadLongArray();
                N = line[0];
                K = line[1];
            }
            {
                D = Input.ReadIntArray();
                for (int i = 0; i < N; i++) D[i]--;
            }

            F = new bool[N];

            long C = 0;
            for (int i = 0; i < N; i++)
            {
                int c = 0;
                int d = i;

                if (!F[d])
                {
                    while (true)
                    {
                        F[d] = true;
                        c++;
                        d = D[d];

                        if (F[d])
                        {
                            C += c - 1;
                            break;
                        }
                    }
                }
            }

            bool possible = (C <= K) && ((K - C) % 2 == 0); 
            Console.WriteLine(possible ? "YES" : "NO");
        }
    }

    // libs ----------
    
    // common ----------

    internal static class Input
    {
        public static int ReadInt()
        {
            string line = Console.ReadLine();
            return int.Parse(line);
        }

        public static int[] ReadIntArray()
        {
            string line = Console.ReadLine();
            return line.Split(' ').Select(int.Parse).ToArray();            
        }

        public static double[] ReadDoubleArray()
        {
            string line = Console.ReadLine();
            return line.Split(' ').Select(double.Parse).ToArray();
        }

        public static long[] ReadLongArray()
        {
            string line = Console.ReadLine();
            return line.Split(' ').Select(long.Parse).ToArray();
        }
    }
    
    internal class Program
    {
        public static void Main(string[] args)
        {
            var s = new Solution();
            s.Run();
        }
    }
}