View Code of Problem 111

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()) {
            long a = scanner.nextLong();
            long b = scanner.nextLong();

            if (a == 0 && b == 0) {
                break;
            }
            System.out.println(a + b);
        }
    }
}