import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;

public class _482 {
	public static void main(String[] args) throws IOException {
		new _482().solve();
	}

	void solve() throws IOException {
		try (final Scanner in = new Scanner(System.in)) {
			int n = in.nextInt();
			long k = in.nextLong();
			int[] D = new int[n];
			for (int i = 0; i < n; i++) {
				D[i] = in.nextInt() - 1;
			}
			boolean[] vis = new boolean[n];
			for (int i = 0; i < n; i++) if (!vis[i]) {
				int c = 1;
				for (int j = D[i]; j != i; j = D[j], c++) vis[j] = true;
				k -= c - 1;
			}
			System.out.println(k >= 0 && k % 2 == 0 ? "YES" : "NO");
		}
	}
	
	// for debug
	static void dump(Object... o) {
		System.err.println(Arrays.deepToString(o));
	}
}