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[] arr = new int[n + 1];
		for (int i = 1; i <= n; i++) {
		    arr[i] = sc.nextInt();
		}
		for (int i = 1; i <= n; i++) {
		    while (arr[i] != i) {
		        int idx = arr[i];
		        arr[i] = arr[idx];
		        arr[idx] = idx;
		        k--;
		    }
		}
		if (k >= 0 && k % 2 == 0) {
		    System.out.println("YES");
		} else {
		    System.out.println("NO");
		}
	}
}