//package test;

import java.util.Scanner;

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

import java.util.Scanner;

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