import java.util.Scanner;
public class Main {
public static void main(String[] args){
Scanner in = new Scanner(System.in);
int t = in.nextInt();
if(t< 1 || t> 100){
return;
}
int[] arr = new int[t *2];
int i = 0;
while (t-- > 0){
int a = in.nextInt();
int b = in.nextInt();
if (a<1 || a > 100000000 || b<1 || b> 1000000000)
return;
// System.out.println(a +"---" + b);
arr[i++] = a;
arr[i++] = b;
}
//System.out.println(Arrays.toString(arr));
i = 0;
while (i<arr.length){
System.out.println(arr[i++] + arr[i++]);
}
}
}