public class Main
{
	public static void main(String[] args) {
		 System.out.println("student name : ruan tong deng");
		 System.out.println("student number : 1124181008");
		 System.out.println("*");
	     System.out.println("**");
         System.out.println("***");
         System.out.println("****");
         System.out.println("*****");
}
}