import java.util.*;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		long K = sc.nextLong();
		int[] D = new int[N];
		for (int i = 0; i < N; ++i) {
			D[i] = sc.nextInt() - 1;
		}

		boolean[] vis = new boolean[N];
		int cnt = 0;
		for (int i = 0; i < N; ++i) {
			if (vis[i])
				continue;
			int cur = i;
			vis[i] = true;
			while (D[cur] != i) {
				cur = D[cur];
				vis[cur] = true;
				++cnt;
			}
		}
		if (cnt % 2 != K % 2 || cnt > K) {
			System.out.println("NO");
		} else {
			System.out.println("YES");
		}
	}

	static void tr(Object... objects) {
		System.out.println(Arrays.deepToString(objects));
	}

}