using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(JoinString());

    }

    public static string JoinString()

    {

        string data = "Hello-";

        StringBuilder sb = new StringBuilder(data);

        for(int i = 1; i <= 10; i++)

        {

            sb.Append((i*100).ToString());

            sb.Append(",");

        }

        return sb.ToString().Substring(0,sb.Length-1);

    }

}