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;
using System.Collections.Generic;
using System.IO;

public class Program
{

    public static void Main()
    {
        int[] n = Console.ReadLine().Split(' ').Select(a => int.Parse(a)).ToArray();
        string[] s = new string[n[0]];
        for (int i = 0; i < n[0]; i++) s[i] = Console.ReadLine();
        for (int i = 0; i < n[1] + 2; i++) Console.Write("#");
        Console.WriteLine();
        for (int i = 0; i < n[0]; i++) Console.WriteLine("#" + s[i] + "#");
        for (int i = 0; i < n[1] + 2; i++) Console.Write("#");
        Console.WriteLine();
    }

    static int[] s_to_i(string[] s)
    {
        int[] ret = Array.ConvertAll<string, int>(s, delegate (string value) { return int.Parse(value); });
        return ret;
    }
}