import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner (System.in);
        int n=sc.nextInt();
        int m=sc.nextInt();
        String ans="Yes";
        if (n%2==1){
            if (m<10 || m%2==1){
                ans="No";
            }
        } else {
            if (m%2==1){
                ans="No";
            }
        }
        System.out.println(ans);
    }
}