java Uva10812.java

Posted 2021-05-08

import java.util.*;
public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner scanner = new Scanner(System.in);
		int num = scanner.nextInt();
		while(num-->0){
			int s = scanner.nextInt();
			int d = scanner.nextInt();
			int a,b;
			if(s<d){
				System.out.println("impossible");
			}else{
				if((s+d)%2==0){
					a = (s+d)/2;
					b = s-a;
					if(b>a){
						int temp = a;
						a = b;
						b = temp;
					}
					System.out.println(a+" "+b);
				}else{
					System.out.println("impossible");
				}
			}
			
		}
	}

}