/*

*

**

***

****

*****

​

*/

​

using System;

public class Program

{

    public static void Main()

    {

        for ( int i=1;i<=5;i++)

        {

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

            {

              Console.Write("*");

            }

              Console.WriteLine();

        }

    }

}