import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int[] arr = new int[2 * n];
        for(int i = 0; i < 2 * n; i++){
            arr[i] =  scan.nextInt();
        }
        for(int i = 0; i < n; i++){
            System.out.println(arr[2 * i] + arr[2 * i + 1]);
        }
    }    
}