import java.math.*;
import java.util.*;
import java.io.*;

public class Main{
    public static void main(String[] args){
	new Main().run();
    }

    void run(){
	Scanner sc=new Scanner(System.in);
	BigInteger a=new BigInteger(sc.next());
	BigInteger b=new BigInteger(sc.next());
	a=a.remainder(new BigInteger("2"));
	if(a.equals(new BigInteger("1"))){
	    b.subtract(new BigInteger("10"));
	}
	if(b.signum()==-1||b.remainder(new BigInteger("2")).equals(new BigInteger("1"))){
	    System.out.println("No");
	}else{
	    System.out.println("Yes");
	}
    }
}