import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int X = scan.nextInt();
		int Y = scan.nextInt();

		if (Y%2 == 0 && 2*X <= Y && Y <= 4*X) {
			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 scan = new Scanner(System.in);

		int X = scan.nextInt();
		int Y = scan.nextInt();

		if (Y%2 == 0 && 2*X <= Y && Y <= 4*X) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

	}

} Main public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int X = scan.nextInt();
		int Y = scan.nextInt();

		if (Y%2 == 0 && 2*X <= Y && Y <= 4*X) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

	} main {

		Scanner scan = new Scanner(System.in);

		int X = scan.nextInt();
		int Y = scan.nextInt();

		if (Y%2 == 0 && 2*X <= Y && Y <= 4*X) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int X = scan.nextInt(); X scan.nextInt() scan.nextInt scan int Y = scan.nextInt(); Y scan.nextInt() scan.nextInt scan if (Y%2 == 0 && 2*X <= Y && Y <= 4*X) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} Y%2 == 0 && 2*X <= Y && Y <= 4*X Y%2 == 0 && 2*X <= Y && Y <= 4*X Y%2 == 0 Y%2 Y 2 0 2*X <= Y 2*X 2 X Y Y <= 4*X Y 4*X 4 X {
			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 scan = new Scanner(System.in);

		int X = scan.nextInt();
		int Y = scan.nextInt();

		if (Y%2 == 0 && 2*X <= Y && Y <= 4*X) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

	}

} public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int X = scan.nextInt();
		int Y = scan.nextInt();

		if (Y%2 == 0 && 2*X <= Y && Y <= 4*X) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int X = scan.nextInt();
		int Y = scan.nextInt();

		if (Y%2 == 0 && 2*X <= Y && Y <= 4*X) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

	}

}