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[]D = new int[N];
		for(int i = 0; i < N; i++) {
			D[i] = scan.nextInt();
		}
		scan.close();
		long cnt = 0;
		for(int i = 0; i < N; i++) {
			if(D[i] == i + 1) {
				continue;
			}
			for(int j = i + 1; j < N; j++) {
				if(D[j] == i + 1) {
					int v = D[i];
					D[i] = i + 1;
					D[j] = v;
					cnt ++;
					break;
				}
			}

		}

		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");
			}
		}
	}
}