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 System;
using System.Linq;

public class Program
{
    static void Main()
    {
        int[] input = Array.ConvertAll(Console.ReadLine().Split(' '), int.Parse);
        int h = input[0];
        int w = input[1];
        string[] ans = new string[h + 2];
        string firstAndlast = "";
        for (int i = 0; i < w + 2; i++)
        {
            firstAndlast += "#";
        }
        ans[0] = firstAndlast;
        ans[h + 1] = firstAndlast;

        for (int i = 1; i <= h; i++)
        {
            ans[i] = $"#{Console.ReadLine()}#";
        }
        foreach (var i in ans)
        {
            Console.WriteLine(i);
        }

    }
}