import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    long K = sc.nextLong();
    int[] d = new int[N + 1];
    for(int i = 1; i < N + 1; i++) {
      d[i] = sc.nextInt();
    }
    long num = 0;
    for(int i = 1; i < N + 1; i++) {
      while(d[i] != i) {
        int temp = d[i];
        d[i] = d[d[i]];
        d[d[i]] = temp;
        num++;
      }
    }
    String ans = "NO";
    if(num <= K && (K - num) % 2 == 0) ans = "YES";
    System.out.println(ans);
  }
}