import java.util.Scanner;

public class Main {
	private static Scanner sc = new Scanner(System.in);
	public static void main(String[] args) {
		int n = sc.nextInt();
		long k = sc.nextLong();
		int[] l = new int[200010];
		boolean[] b = new boolean[200010];
		for (int i = 1;i <= n;i++) {
			l[i] = sc.nextInt();
		}

		int r = 0;
		for (int i = 1;i <= n;i++) {
			if (b[i]) continue;
			int s = i;
			int j = l[i];
			int c = 0;
			b[i] = true;
			while (true) {
				if (j==s) break;
				b[j] = true;
				j = l[j];
				c++;
			}
			r += c;
			b[i] = true;
		}

		if (r<=k) {
			if ((k-r)%2==0) {
				System.out.println("YES");
			} else {
				System.out.println("NO");
			}
		} else {
			System.out.println("NO");
		}
	}
}