import java.util.Scanner;

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

public class Main {
	public static void main(String[] args) {
		Scanner scn = new Scanner(System.in);
		int x = scn.nextInt(), y = scn.nextInt();
		if (2 * x <= y && 4 * x >= y && y % 2 == 0)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
}
