Beat_the_Spread!.java

import java.util.*;
public class main{
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int numbers = input.nextInt();
        for(int i=1;i<=numbers;i++) {
        	int x = input.nextInt();
        	int y = input.nextInt();
        	int x_add_y = x + y;
        	if(x_add_y % 2 != 0) {
        		System.out.println("impossible");
        		continue;
        	}
        	int x_ans = (x_add_y) / 2;
        	int y_ans = x - x_ans;
        	
        	if(x_ans < 0 || y_ans < 0)
        		System.out.println("impossible");
        	else
        		System.out.println(x_ans + " " + y_ans);
        }
    }
};