// HOMWRK
package Bronze_IV_4;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
public class Ex18398 {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int t = Integer.parseInt(br.readLine());
for (int i = 0; i < t; i++) {
int n = Integer.parseInt(br.readLine());
int sum, mul;
for (int j = 0; j < n; j++) {
StringTokenizer st = new StringTokenizer(br.readLine());
int a = Integer.parseInt(st.nextToken());
int b = Integer.parseInt(st.nextToken());
sum = a + b;
mul = a * b;
System.out.printf("%d %d\n", sum, mul);
}
}
}
}