Problem:
Score : 200 points

Problem Statement

You are given a image with a height of H pixels and a width of W pixels.
Each pixel is represented by a lowercase English letter.
The pixel at the i-th row from the top and j-th column from the left is a_{ij}.

Put a box around this image and output the result. The box should consist of # and have a thickness of 1.

Constraints

1 ≤ H, W ≤ 100

a_{ij} is a lowercase English letter.

Input

Input is given from Standard Input in the following format:

H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}

Output

Print the image surrounded by a box that consists of # and has a thickness of 1.

Sample Input 1

2 3
abc
arc

Sample Output 1

#####
#abc#
#arc#
#####

Sample Input 2

1 1
z

Sample Output 2

###
#z#
###

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using static System.Console;
using static System.Convert;
class Program
{
    static void Main(string[] args)
    {
        var input = ReadLine().Split(' ');
        var height = ToInt32(input[0]);
        var width = ToInt32(input[1]);
        var strs = new string[height];
        for(var i = 0; i < height; i++)
        {
            strs[i] = $"#{ReadLine()}#";
        }
        var outLine = "";
        for(var i = 0; i < width + 2; i++)
        {
            outLine += "#";
        }
        WriteLine(outLine);
        for(var i = 0; i < height; i++)
        {
            WriteLine(strs[i]);
        }
        WriteLine(outLine);
    }
}