import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      int total=sc.nextInt();
      int totalleg=sc.nextInt();
      if(totalleg>=2*total&&totalleg<=4*total&&totalleg%2==0){
         System.out.println("Yes");
      }else{
         System.out.println("No");
      }  
   }
}
      
       import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      int total=sc.nextInt();
      int totalleg=sc.nextInt();
      if(totalleg>=2*total&&totalleg<=4*total&&totalleg%2==0){
         System.out.println("Yes");
      }else{
         System.out.println("No");
      }  
   }
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      int total=sc.nextInt();
      int totalleg=sc.nextInt();
      if(totalleg>=2*total&&totalleg<=4*total&&totalleg%2==0){
         System.out.println("Yes");
      }else{
         System.out.println("No");
      }  
   } main {
		Scanner sc = new Scanner(System.in);
      int total=sc.nextInt();
      int totalleg=sc.nextInt();
      if(totalleg>=2*total&&totalleg<=4*total&&totalleg%2==0){
         System.out.println("Yes");
      }else{
         System.out.println("No");
      }  
   } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int total=sc.nextInt(); total sc.nextInt() sc.nextInt sc int totalleg=sc.nextInt(); totalleg sc.nextInt() sc.nextInt sc if(totalleg>=2*total&&totalleg<=4*total&&totalleg%2==0){
         System.out.println("Yes");
      }else{
         System.out.println("No");
      } totalleg>=2*total&&totalleg<=4*total&&totalleg%2==0 totalleg>=2*total&&totalleg<=4*total&&totalleg%2==0 totalleg>=2*total totalleg 2*total 2 total totalleg<=4*total totalleg 4*total 4 total totalleg%2==0 totalleg%2 totalleg 2 0 {
         System.out.println("Yes");
      } System.out.println("Yes") System.out.println System.out System System.out "Yes" {
         System.out.println("No");
      } System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      int total=sc.nextInt();
      int totalleg=sc.nextInt();
      if(totalleg>=2*total&&totalleg<=4*total&&totalleg%2==0){
         System.out.println("Yes");
      }else{
         System.out.println("No");
      }  
   }
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      int total=sc.nextInt();
      int totalleg=sc.nextInt();
      if(totalleg>=2*total&&totalleg<=4*total&&totalleg%2==0){
         System.out.println("Yes");
      }else{
         System.out.println("No");
      }  
   }
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      int total=sc.nextInt();
      int totalleg=sc.nextInt();
      if(totalleg>=2*total&&totalleg<=4*total&&totalleg%2==0){
         System.out.println("Yes");
      }else{
         System.out.println("No");
      }  
   }
}
      
      
