
import java.util.Scanner;

public class Main {

	static Scanner scanner;

	public static void main(String[] args) {
	    scanner = new Scanner(System.in);

	    int X=gi();
	    int Y=gi();
	    
	    


        //System.out.print(c);

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

	// 文字列として入力を取得
	public static String gs() {
		return scanner.next();
	}

	// intとして入力を取得
	public static int gi() {
		return Integer.parseInt(scanner.next());
	}

	// longとして入力を取得
	public static long gl() {
		return Long.parseLong(scanner.next());
	}

	// doubleとして入力を取得
	public static double gd() {
		return Double.parseDouble(scanner.next());
	}
} import java.util.Scanner; Scanner java.util public class Main {

	static Scanner scanner;

	public static void main(String[] args) {
	    scanner = new Scanner(System.in);

	    int X=gi();
	    int Y=gi();
	    
	    


        //System.out.print(c);

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

	// 文字列として入力を取得
	public static String gs() {
		return scanner.next();
	}

	// intとして入力を取得
	public static int gi() {
		return Integer.parseInt(scanner.next());
	}

	// longとして入力を取得
	public static long gl() {
		return Long.parseLong(scanner.next());
	}

	// doubleとして入力を取得
	public static double gd() {
		return Double.parseDouble(scanner.next());
	}
} Main static Scanner scanner; scanner public static void main(String[] args) {
	    scanner = new Scanner(System.in);

	    int X=gi();
	    int Y=gi();
	    
	    


        //System.out.print(c);

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

	    int X=gi();
	    int Y=gi();
	    
	    


        //System.out.print(c);

        if (2*X<=Y&& Y<=4*X && Y%2==0) {
        	System.out.println("Yes");
        }else{
        	System.out.println("No");
        }
	} scanner = new Scanner(System.in) scanner new Scanner(System.in) int X=gi(); X gi() gi int Y=gi(); Y gi() gi 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" String[] args args // 文字列として入力を取得
	public static String gs() {
		return scanner.next();
	} gs {
		return scanner.next();
	} return scanner.next(); scanner.next() scanner.next scanner // intとして入力を取得
	public static int gi() {
		return Integer.parseInt(scanner.next());
	} gi {
		return Integer.parseInt(scanner.next());
	} return Integer.parseInt(scanner.next()); Integer.parseInt(scanner.next()) Integer.parseInt Integer scanner.next() scanner.next scanner // longとして入力を取得
	public static long gl() {
		return Long.parseLong(scanner.next());
	} gl {
		return Long.parseLong(scanner.next());
	} return Long.parseLong(scanner.next()); Long.parseLong(scanner.next()) Long.parseLong Long scanner.next() scanner.next scanner // doubleとして入力を取得
	public static double gd() {
		return Double.parseDouble(scanner.next());
	} gd {
		return Double.parseDouble(scanner.next());
	} return Double.parseDouble(scanner.next()); Double.parseDouble(scanner.next()) Double.parseDouble Double scanner.next() scanner.next scanner public class Main {

	static Scanner scanner;

	public static void main(String[] args) {
	    scanner = new Scanner(System.in);

	    int X=gi();
	    int Y=gi();
	    
	    


        //System.out.print(c);

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

	// 文字列として入力を取得
	public static String gs() {
		return scanner.next();
	}

	// intとして入力を取得
	public static int gi() {
		return Integer.parseInt(scanner.next());
	}

	// longとして入力を取得
	public static long gl() {
		return Long.parseLong(scanner.next());
	}

	// doubleとして入力を取得
	public static double gd() {
		return Double.parseDouble(scanner.next());
	}
} public class Main {

	static Scanner scanner;

	public static void main(String[] args) {
	    scanner = new Scanner(System.in);

	    int X=gi();
	    int Y=gi();
	    
	    


        //System.out.print(c);

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

	// 文字列として入力を取得
	public static String gs() {
		return scanner.next();
	}

	// intとして入力を取得
	public static int gi() {
		return Integer.parseInt(scanner.next());
	}

	// longとして入力を取得
	public static long gl() {
		return Long.parseLong(scanner.next());
	}

	// doubleとして入力を取得
	public static double gd() {
		return Double.parseDouble(scanner.next());
	}
} Main

import java.util.Scanner;

public class Main {

	static Scanner scanner;

	public static void main(String[] args) {
	    scanner = new Scanner(System.in);

	    int X=gi();
	    int Y=gi();
	    
	    


        //System.out.print(c);

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

	// 文字列として入力を取得
	public static String gs() {
		return scanner.next();
	}

	// intとして入力を取得
	public static int gi() {
		return Integer.parseInt(scanner.next());
	}

	// longとして入力を取得
	public static long gl() {
		return Long.parseLong(scanner.next());
	}

	// doubleとして入力を取得
	public static double gd() {
		return Double.parseDouble(scanner.next());
	}
}