Problem:
Print a Frame

Draw a frame which has a height of H cm and a width of W cm. For example, the following figure shows a frame which has a height of 6 cm and a width of 10 cm.

##########
#........#
#........#
#........#
#........#
##########

Input

The input consists of multiple datasets. Each dataset consists of two integers H and W separated by a single space.

The input ends with two 0 (when both H and W are zero).

Output

For each dataset, print the frame made of '#' and '.'.

Print a blank line after each dataset.

Constraints

3 ≤ H ≤ 300

3 ≤ W ≤ 300

Sample Input

3 4
5 6
3 3
0 0

Sample Output

####
#..#
####

######
#....#
#....#
#....#
######

###
#.#
###

Solution in C# (judge verdict: Wrong Answer)

using System;

namespace AOJ
{
    class Program
    {
        static void Main(string[] args)
        {
            while (true)
            {
                var read = Console.ReadLine();
                var temp_string = read.Split(' ');

                int H = int.Parse(temp_string[0]), W = int.Parse(temp_string[1]);

                if (H == 0 && W == 0)
                    break;

                if(H!=0)
                {
                    for(int i=0;i<W;i++)
                    {
                        Console.Write("#");
                    }
                    Console.WriteLine();

                    for (int i = 0; i < H - 2;i++ )
                    {
                        Console.Write("#");
                        for(int r = 0 ;r < W-2;r++)
                        {
                            Console.Write(" ");
                        }
                        Console.Write("#");
                        Console.WriteLine();

                    }


                        if (H > 1)
                        {
                            for (int i = 0; i < W; i++)
                            {
                                Console.Write("#");
                            }
                            Console.WriteLine();
                        }

                }
            }

        }
    }
}