题解 | #多组_A+B_零尾模式#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNextInt()) { 
            int a = in.nextInt();
            int b = in.nextInt();
            if(a==0 && b==0){
                break;
            }
            System.out.println(a + b);
        }
    }
}