using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        int val = 5;  

         int i, j, k ;  

         for (i = 1; i <= val; i++)  

         {  

            for (k = 1; k <= i; k++)  

            {  

               Console.Write("*");  

            }  

            Console.WriteLine("");  

         }  

         Console.ReadLine();

    }

}