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); char in = scanner.next().charAt(0); int n = 3; for(int i = 1; i <= n; i++) { for(int j = 1; j <= n - i; j++) { System.out.print...