import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
      	int x = sc.nextInt();
        int y = sc.nextInt();
      	int t;
      	int k;
      	boolean coj = false;
      
      	if(y % 2 == 0){
          t = y/2;
          k = y/4;
          if(y % 4 != 0)k++;
          if(t >= x && x >= k) coj = true;
        }
          
      	if(coj) 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 x = sc.nextInt();
        int y = sc.nextInt();
      	int t;
      	int k;
      	boolean coj = false;
      
      	if(y % 2 == 0){
          t = y/2;
          k = y/4;
          if(y % 4 != 0)k++;
          if(t >= x && x >= k) coj = true;
        }
          
      	if(coj) System.out.println("Yes");
      	else System.out.println("No");
      
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
      	int x = sc.nextInt();
        int y = sc.nextInt();
      	int t;
      	int k;
      	boolean coj = false;
      
      	if(y % 2 == 0){
          t = y/2;
          k = y/4;
          if(y % 4 != 0)k++;
          if(t >= x && x >= k) coj = true;
        }
          
      	if(coj) System.out.println("Yes");
      	else System.out.println("No");
      
	} main {
		Scanner sc = new Scanner(System.in);
		
      	int x = sc.nextInt();
        int y = sc.nextInt();
      	int t;
      	int k;
      	boolean coj = false;
      
      	if(y % 2 == 0){
          t = y/2;
          k = y/4;
          if(y % 4 != 0)k++;
          if(t >= x && x >= k) coj = true;
        }
          
      	if(coj) System.out.println("Yes");
      	else System.out.println("No");
      
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc int y = sc.nextInt(); y sc.nextInt() sc.nextInt sc int t; t int k; k boolean coj = false; coj false if(y % 2 == 0){
          t = y/2;
          k = y/4;
          if(y % 4 != 0)k++;
          if(t >= x && x >= k) coj = true;
        } y % 2 == 0 y % 2 y 2 0 {
          t = y/2;
          k = y/4;
          if(y % 4 != 0)k++;
          if(t >= x && x >= k) coj = true;
        } t = y/2 t y/2 y 2 k = y/4 k y/4 y 4 if(y % 4 != 0)k++; y % 4 != 0 y % 4 y 4 0 k++ k if(t >= x && x >= k) coj = true; t >= x && x >= k t >= x t x x >= k x k coj = true coj true if(coj) System.out.println("Yes");
      	else System.out.println("No"); coj System.out.println("Yes") System.out.println System.out System System.out "Yes" 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 x = sc.nextInt();
        int y = sc.nextInt();
      	int t;
      	int k;
      	boolean coj = false;
      
      	if(y % 2 == 0){
          t = y/2;
          k = y/4;
          if(y % 4 != 0)k++;
          if(t >= x && x >= k) coj = true;
        }
          
      	if(coj) 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 x = sc.nextInt();
        int y = sc.nextInt();
      	int t;
      	int k;
      	boolean coj = false;
      
      	if(y % 2 == 0){
          t = y/2;
          k = y/4;
          if(y % 4 != 0)k++;
          if(t >= x && x >= k) coj = true;
        }
          
      	if(coj) 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 x = sc.nextInt();
        int y = sc.nextInt();
      	int t;
      	int k;
      	boolean coj = false;
      
      	if(y % 2 == 0){
          t = y/2;
          k = y/4;
          if(y % 4 != 0)k++;
          if(t >= x && x >= k) coj = true;
        }
          
      	if(coj) System.out.println("Yes");
      	else System.out.println("No");
      
	}
}