KspichaniaBoats

using System;

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

        int width = n * 2 + 1;
        int height = 6 + ((n - 3) / 2) * 3;

        int[,] matrix = new int[height, width];

        int x = height / 3;
        int y = width / 2;

        int currentCol = y;
        int currentRow = 0;

        while (true)
        {
            matrix[currentRow, currentCol] = 1;

            currentCol++;
            currentRow++;

            if (currentRow == x * 2)
            {
                currentCol--;
                currentRow--;
                break;
            }
        }

        while (true)
        {
            matrix[currentRow, currentCol] = 1;

            currentCol--;
            currentRow++;

            if (currentCol == y + n / 2 - 1)
            {
                currentCol++;
                currentRow--;
                break;
            }
        }

        while (true)
        {
            matrix[currentRow, currentCol] = 1;

            currentCol--;

            if (currentCol == n / 2 + 1)
            {
                //currentCol++;
                //currentRow--;
                break;
            }
        }

        while (true)
        {
            matrix[currentRow, currentCol] = 1;

            currentCol--;
            currentRow--;

            if (currentRow == x * 2 - 2)
            {
                currentCol++;
                currentRow++;
                break;
            }
        }

        while (true)
        {
            matrix[currentRow, currentCol] = 1;

            currentCol++;
            currentRow--;

            if (currentCol == y + 1)
            {
                currentCol--;
                currentRow++;
                break;
            }
        }

        while (true)
        {
            matrix[currentRow, currentCol] = 1;

            currentRow++;

            if (currentRow == height)
            {
                currentRow--;
                break;
            }
        }

        while (true)
        {
            matrix[currentRow, currentCol] = 1;

            currentRow--;

            if (currentRow == x * 2 - 1)
            {
                //currentRow++;
                break;
            }
        }

        while (true)
        {
            matrix[currentRow, currentCol] = 1;

            currentCol++;

            if (currentCol == width)
            {
                currentCol--;
                break;
            }
        }

        while (true)
        {
            matrix[currentRow, currentCol] = 1;

            currentCol--;

            if (currentCol == 0)
            {
                currentCol++;
                break;
            }
        }

        for (int row = 0; row < height; row++)
        {
            for (int col = 0; col < width; col++)
            {
                if (matrix[row, col] == 0)
                {
                    Console.Write('.');
                }
                if (matrix[row, col] == 1)
                {
                    Console.Write('*');
                }
            }
            Console.WriteLine();
        }
    }
}