UVA - 10812 - Beat The Spreads

import java.io.*;
import java.util.IllegalFormatException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

public class Main{

    public static void main(String[] args) throws FileNotFoundException {
        TextIO.readStream(System.in);
        int cases=TextIO.getInt();
        for(int i=0;i<cases;i++){
            int x=TextIO.getInt();
            int y=TextIO.getInt();
            if(x<y ||(x+y)%2!=0)
                System.out.println("impossible");
            else{
                int num1,num2;
                num1=(x+y)/2;
                num2=(x-y)/2;
                System.out.println(Math.max(num1, num2)+" "+Math.min(num1, num2));
            }
        }       
   }
}