import java.util.Scanner;
public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        if(y / 2 * 2 != y){
            System.out.println("No");
        }else if(y / 2 < x){
            System.out.println("No");
        }else if(4 * x < y){
            System.out.println("No");
        }else{
            System.out.println("Yes");
        }
        sc.close();
    }
} import java.util.Scanner; Scanner 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();
        if(y / 2 * 2 != y){
            System.out.println("No");
        }else if(y / 2 < x){
            System.out.println("No");
        }else if(4 * x < y){
            System.out.println("No");
        }else{
            System.out.println("Yes");
        }
        sc.close();
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        if(y / 2 * 2 != y){
            System.out.println("No");
        }else if(y / 2 < x){
            System.out.println("No");
        }else if(4 * x < y){
            System.out.println("No");
        }else{
            System.out.println("Yes");
        }
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        if(y / 2 * 2 != y){
            System.out.println("No");
        }else if(y / 2 < x){
            System.out.println("No");
        }else if(4 * x < y){
            System.out.println("No");
        }else{
            System.out.println("Yes");
        }
        sc.close();
    } 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 if(y / 2 * 2 != y){
            System.out.println("No");
        }else if(y / 2 < x){
            System.out.println("No");
        }else if(4 * x < y){
            System.out.println("No");
        }else{
            System.out.println("Yes");
        } y / 2 * 2 != y y / 2 * 2 y / 2 y 2 2 y {
            System.out.println("No");
        } System.out.println("No") System.out.println System.out System System.out "No" if(y / 2 < x){
            System.out.println("No");
        }else if(4 * x < y){
            System.out.println("No");
        }else{
            System.out.println("Yes");
        } y / 2 < x y / 2 y 2 x {
            System.out.println("No");
        } System.out.println("No") System.out.println System.out System System.out "No" if(4 * x < y){
            System.out.println("No");
        }else{
            System.out.println("Yes");
        } 4 * x < y 4 * x 4 x y {
            System.out.println("No");
        } System.out.println("No") System.out.println System.out System System.out "No" {
            System.out.println("Yes");
        } System.out.println("Yes") System.out.println System.out System System.out "Yes" sc.close() sc.close sc 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();
        if(y / 2 * 2 != y){
            System.out.println("No");
        }else if(y / 2 < x){
            System.out.println("No");
        }else if(4 * x < y){
            System.out.println("No");
        }else{
            System.out.println("Yes");
        }
        sc.close();
    }
} public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        if(y / 2 * 2 != y){
            System.out.println("No");
        }else if(y / 2 < x){
            System.out.println("No");
        }else if(4 * x < y){
            System.out.println("No");
        }else{
            System.out.println("Yes");
        }
        sc.close();
    }
} Main
import java.util.Scanner;
public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        int y = sc.nextInt();
        if(y / 2 * 2 != y){
            System.out.println("No");
        }else if(y / 2 < x){
            System.out.println("No");
        }else if(4 * x < y){
            System.out.println("No");
        }else{
            System.out.println("Yes");
        }
        sc.close();
    }
}