using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter string number: ");

        int n = int.Parse(Console.ReadLine());

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

        {

            int space = n - i;

            int star = 2*i - 1;

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

                Console.Write(" ");

            for (int k = 1; k<= star; k++)

                Console.Write("*");

            Console.WriteLine("");

        }

    }

}