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 Java (OpenJDK 11.0.6) (judge verdict: Wrong Answer)

import java.util.Scanner;

public class Main {
    static final String YES = "Yes";
    static final String NO = "No";
    
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

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

        scan.close();

        // if (Y%2 != 0){
        //     System.out.println(NO);
        //     return;
        // }

        int crane = 2*X - Y/2;
        int turtle = (Y-2*X)/2;

        if (crane < 0 ){
            System.out.println(NO);
            return;
        }

        if( turtle < 0){
            System.out.println(NO);
            return;
        }

        System.out.println(YES);
        
    }
}