Problem: Mahmoud and Ehab are on the third stage of their adventures now. As you know, Dr. Evil likes sets. This time he won't show them any set from his large collection, but will ask them to create a new set to replenish his beautiful collection of sets.

Dr. Evil has his favorite evil integer x. He asks Mahmoud and Ehab to find a set of n distinct non-negative integers such the bitwise-xor sum of the integers in it is exactly x. Dr. Evil doesn't like big numbers, so any number in the set shouldn't be greater than 106.

Input

The only line contains two integers n and x (1 ≤ n ≤ 105, 0 ≤ x ≤ 105) — the number of elements in the set and the desired bitwise-xor, respectively.

Output

If there is no such set, print "NO" (without quotes).

Otherwise, on the first line print "YES" (without quotes) and on the second line print n distinct integers, denoting the elements in the set is any order. If there are multiple solutions you can print any of them.

Examples

Input

5 5


Output

YES
1 2 4 5 7

Input

3 6


Output

YES
1 2 5

Note

You can read more about the bitwise-xor operation here: <https://en.wikipedia.org/wiki/Bitwise_operation#XOR>

For the first sample <image>.

For the second sample <image>.

Solution (in JAVA):

Solution:
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.InputMismatchException;
import java.io.IOException;
import java.util.ArrayList;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author pandusonu
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        TaskC solver = new TaskC();
        solver.solve(1, in, out);
        out.close();
    }

    static class TaskC {
        public ArrayList<Integer> ans;

        public void solve(int testNumber, InputReader in, PrintWriter out) {
            int n = in.readInt();
            int val = in.readInt();
            if (n == 2 && val == 0) {
                out.println("NO");
                return;
            }
            if (n == 1) {
                out.println("YES");
                out.println(val);
                return;
            }
            if (n == 2) {
                out.println("YES");
                out.println("0 " + val);
                return;
            }
            ans = new ArrayList<>();
            if (val != 0) {
                ans.add(val + (int) Math.pow(2, 19));
                ans.add((int) Math.pow(2, 19));
                n -= 2;
                if ((n & 3) == 3) {
                    ans.add((int) Math.pow(2, 18) + (int) Math.pow(2, 17));
                    ans.add((int) Math.pow(2, 18));
                    ans.add((int) Math.pow(2, 17));
                    n -= 3;
                } else if ((n & 2) == 2) {
                    ans.clear();
                    ans.add(val + (int) Math.pow(2, 19));
                    ans.add((int) Math.pow(2, 18) + (int) Math.pow(2, 19));
                    ans.add((int) Math.pow(2, 18));
                    ans.add(0);
                    n -= 2;
                } else if (n % 2 == 1) {
                    ans.add(0);
                    n--;
                }
            } else {
                if ((n & 3) == 3) {
                    ans.add((int) Math.pow(2, 18) + (int) Math.pow(2, 17));
                    ans.add((int) Math.pow(2, 18));
                    ans.add((int) Math.pow(2, 17));
                    n -= 3;
                } else if ((n & 2) == 2) {
                    ans.add((1 << 19) + 1);
                    ans.add((1 << 19) + 2);
                    ans.add((1 << 19) + 3);
                    ans.add((1 << 19) + 4 + 1);
                    ans.add((1 << 19) + 12 + 2);
                    ans.add((1 << 19) + 8 + 3);
                    n -= 6;
                } else if (n % 2 == 1) {
                    ans.add(0);
                    n--;
                }
            }
            getRemain(ans, n);
            out.println("YES");
            int xor = 0;
            for (int x : ans) {
                out.print(x + " ");
                xor = xor ^ x;
            }
            out.println();
            //out.println(xor);
        }

        public void getRemain(ArrayList<Integer> ans, int n) {
            int start = 4;
            for (; start < 1000000; start *= 2) {
                if ((n & start) == start) {
                    for (int i = start; i < start * 2; i++)
                        ans.add(i);
                }
            }
        }

    }

    static class InputReader {
        private final InputStream stream;
        private final byte[] buf = new byte[1024];
        private int curChar;
        private int numChars;

        public InputReader(InputStream stream) {
            this.stream = stream;
        }

        private int read() {
            try {
                if (curChar >= numChars) {
                    curChar = 0;
                    numChars = stream.read(buf);
                    if (numChars <= 0)
                        return -1;
                }
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
            return buf[curChar++];
        }

        public int readInt() {
            return (int) readLong();
        }

        public long readLong() {
            int c = read();
            while (isSpaceChar(c)) {
                c = read();
                if (c == -1) throw new RuntimeException();
            }
            boolean negative = false;
            if (c == '-') {
                negative = true;
                c = read();
            }
            long res = 0;
            do {
                if (c < '0' || c > '9') throw new InputMismatchException();
                res *= 10;
                res += (c - '0');
                c = read();
            } while (!isSpaceChar(c));
            return negative ? (-res) : (res);
        }

        private boolean isSpaceChar(int c) {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }

    }
}