[백준] 11006번 남욱이의 닭장

 

 

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Main {
	public static void main(String[] args) throws Exception {

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

		int t = Integer.parseInt(br.readLine());

		for (int i = 0; i < t; i++) {
			String[] temp = br.readLine().split(" ");
			int a = Integer.parseInt(temp[0]);
			int b = Integer.parseInt(temp[1]);

			int oneLegChicken = 2*b-a;
			int twoLegChicken = a-b;

			if (a>0) {
				bw.write(oneLegChicken+ " " +twoLegChicken);
			} else {
				bw.write("0 0");

			}
			bw.newLine();

		}
		bw.flush();
		br.close();

	}
}