Figure.Star

using System;
class Star
{
    static void Main()
    {
        int n = int.Parse(Console.ReadLine());

        char dot = '.';

        // first row
        Console.WriteLine("{0}*{0}",new string (dot,n));
        // end first

        // second row
        int secondDots = n - 1;
        int secondInnerDots = 1;
        for (int i = 0; i < n/2-1; i++)
        {
            Console.WriteLine("{0}*{1}*{0}",
                new string(dot, secondDots),
                new string (dot,secondInnerDots));
            secondDots--;
            secondInnerDots += 2;
        }
        // end second

        // third row
        Console.WriteLine("{0}{1}{0}", new string('*', n / 2 + 1), new string(dot, n - 1));
        // end third

        // four row
        int fourDots = 1;
        int fourInnerDots = (n*2+1)-4;
        for (int i = 0; i < n/2-1; i++)
        {
            Console.WriteLine("{0}*{1}*{0}",
                new string (dot,fourDots),
                new string (dot,fourInnerDots));
            fourDots++;
            fourInnerDots -= 2;
        }
        // end four

        // five
        Console.WriteLine("{0}*{1}*{1}*{0}",new string (dot,n/2),new string(dot,n/2-1) );
        // end five

        // six row
        int sixDots = n / 2 - 1;
        int sixDotsUnchange = n/2-1;
        int sixInnerDots = 1;
        for (int i = 0; i < n/2-1; i++)
        {
            Console.WriteLine("{0}*{1}*{2}*{1}*{0}",
                new string(dot, sixDots),
                new string(dot, sixDotsUnchange),
                new string(dot, sixInnerDots));
            sixDots--;
            sixInnerDots += 2;
        }
        // end six
        // last
        Console.WriteLine("{0}{1}{0}", new string('*', n / 2 + 1), new string(dot, n - 1));
    }
}