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 in = new Scanner(System.in); int count = in.nextInt(); while (count>0) { // 注意 while 处理多个 case int a = in.nextInt(); int b = in.nextInt(); System.out.println(a + b); count--; } } }