import java.util.Scanner;

public class YourName {

	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		int N = s.nextInt();
		int rest = N;
		long K = s.nextLong();
		int[] D = new int[N];
		for(int i = 0;i < N;i++){
			D[i] = s.nextInt();
			if(i+1 == D[i]){
				D[i] = 0;
				rest--;
			}
		}
		s.close();
		for(int i = 0;i < rest;i++){
			if(D[i] != 0){
				while(D[i] != i+1){
					//System.out.println("D[" + i + "] = " + D[i]);
					int k = D[D[i]-1];
					D[D[i]-1] = 0;
					rest--;
					D[i] = k;
					K--;
				}
				if(K < 0){
					break;
				}
			}
		}
		if(K % 2 == 0){
			System.out.println("YES");
		}else{
			System.out.println("NO");
		}

	}

}