03. Trapezoid (TestExam)

using System;



class Trapezoid
{
    static void Main()
    {
        int n = int.Parse(Console.ReadLine());

        Console.Write(new string('.', n));
        Console.WriteLine(new string('*', n));
        for (int i = 1; i < n; i++)
        {
            for (int j = 2 * n; j > 1; j--)
            {
                if (i == j - n)
                {
                    Console.Write("*");
                }
                else
                Console.Write(".");
            }
            Console.WriteLine("*");
        }
        Console.WriteLine(new string('*', 2*n));
    }

}