import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		long K = scan.nextInt();
		int[]D1 = new int[N + 1];
		int[]D2 = new int[N + 1];
		for(int i = 0; i < N; i++) {
			//D[i] = scan.nextInt();
			int t = scan.nextInt();
			D1[i + 1] = t;
			D2[t] = i + 1;
		}
		scan.close();

		long cnt = 0;
		for(int i = 1; i <= N; i++) {
			if(D1[i] != i) {
				int t1 = D1[i];
				int t2 = D2[i];
				D1[i] = i;
				D2[i] = i;
				D1[t2] = t1;
				D2[t1] = t1;
				cnt++;
			}
		}

		if(cnt > K) {
			System.out.println("NO");
		}else {
			long t = K - cnt;
			if(t % 2 == 0) {
				System.out.println("YES");
			}else {
				System.out.println("NO");
			}
		}
	}
}