import java.util.Scanner;

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

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