import java.util.Scanner; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int t = scanner.nextInt(); // 注意 hasNext 和 hasNextLine 的区别 for (int i = 0; i < t; i++) { int a = scanner.nextInt(); int b = scanner.nextInt(); System.out.println(a + b); } scanner.close(); } }