ZZULIOJ 1073: 再谈鸡兔同笼问题，Java

1073: 再谈鸡兔同笼问题

import java.util.Scanner;
public class Main {
    
    
    public static void main(String[] args) {
    
    
        Scanner cin = new Scanner(System.in);
        int a=cin.nextInt();
        int b=cin.nextInt();
        if(a*2>b||a*4<b||b%2!=0)
            System.out.println("No Answer");
        else
        {
    
    
            int c=b/2-a;
            System.out.println(a-c+" "+c);
        }
    }
}