题解 |

import java.util.Scanner;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main {
    public static void main(String[] args) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String line;

        try {
            while ((line = reader.readLine()) != null && !line.trim().isEmpty()) {
                String[] numbers = line.split(" ");
                if (numbers.length == 2) {
                    int a = Integer.parseInt(numbers[0]);
                    int b = Integer.parseInt(numbers[1]);
                    System.out.println(a + b);
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}