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.Collections.Generic;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        int[] n = Read.Ints();
        string[] s = new string[n[0]];
        for(int i = 0; i < s.Length; i++)
        {
            s[i] = Console.ReadLine();
        }
        string[,] a = new string[n[0],n[1]];
        for(int i = 0; i < n[1] + 2; i++)
        {
            Console.Write("#");
        }Console.WriteLine();
        for(int i = 0; i < n[0]; i++)
        {
            Console.Write("#");Console.WriteLine(s[i]+"#");
        }
        for (int i = 0; i < n[1] + 2; i++)
        {
            Console.Write("#");
        }
        Console.WriteLine();
    }
    public static Boolean uso() { return false; }
    public static bool IsPrime(long n)
    {
        if (n < 2) return false;
        if (n == 2) return true;

        for (int i = 2; i < n; i++)
        {
            if (n % i == 0) return false;
        }
        return true;
    }

}
public static class Read
{
    public static void outl(string n = "") { Console.WriteLine(n); return; }
    public static int Int()
    {
        return int.Parse(Console.ReadLine());
    }
    public static int[] Ints()
    {
        return Console.ReadLine().Split().Select(int.Parse).ToArray();
    }
    public static string Str() { return Console.ReadLine(); }
    public static string[] Strs() { return Console.ReadLine().Split(); }
}