import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int[] ints = new int[a];
        int sum = 0;
        for (int i = 0; i < a; i++) {
            int b = sc.nextInt();
            int c = sc.nextInt();
            sum = b + c;
            ints[i] = sum;
        }
        for (int i = 0; i < a; i++) {
            System.out.println(ints[i]);
        }
    }
}