[백준]10952_A+B - 5

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.StringTokenizer;
 
public class Main {
    public static void main(String args[]) throws IOException {
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st;
        String str;
 
        while (true) {
            st = new StringTokenizer(br.readLine());
            int A = Integer.parseInt(st.nextToken());
            int B = Integer.parseInt(st.nextToken());
            System.out.println(A + B);
            if (A == 0 && B == 0)
                break;
        }
    }
}