Problem:
Score : 200 points

Problem Statement

There are some animals in a garden. Each of them is a crane with two legs or a turtle with four legs.

Takahashi says: "there are X animals in total in the garden, and they have Y legs in total." Determine whether there is a combination of numbers of cranes and turtles in which this statement is correct.

Constraints

1 \leq X \leq 100

1 \leq Y \leq 100

All values in input are integers.

Input

Input is given from Standard Input in the following format:

X Y

Output

If there is a combination of numbers of cranes and turtles in which the statement is correct, print Yes; otherwise, print No.

Sample Input 1

3 8

Sample Output 1

Yes

The statement "there are 3 animals in total in the garden, and they have 8 legs in total" is correct if there are two cranes and one turtle. Thus, there is a combination of numbers of cranes and turtles in which the statement is correct.

Sample Input 2

2 100

Sample Output 2

No

There is no combination of numbers of cranes and turtles in which this statement is correct.

Sample Input 3

1 2

Sample Output 3

Yes

We also consider the case in which there are only cranes or only turtles.

Solution in C# (.NET Core 3.1.201) (judge verdict: Accepted)

using System;
class Program
 {
   	static void Main(string[] args)
        {
    　　	string a = Console.ReadLine(); //標準入力
		string[] aa = a.Split(' ');
		
	       	int X = int.Parse(aa[0]);
       		int Y = int.Parse(aa[1]);

      
      bool test = (2*X <=Y&& Y<=4*X&&Y%2==0);
		if(test){
     		Console.WriteLine("{0}", "Yes");
        }else{
          Console.WriteLine("{0}", "No");
        }
		
        }
 
  	
	static void changev(int h){
    
  	}
 }