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;
using System.Text;
using System.Threading.Tasks;

namespace AIZU
{
    class Program
    {
        static int cin() { return int.Parse(Console.ReadLine()); }
        static int cin(int D) {
            string s = Console.ReadLine();
            if (string.IsNullOrEmpty(s)) return D;
            return int.Parse(s);
        }
        static int[] cins() {
            string s = Console.ReadLine();
            if (string.IsNullOrEmpty(s)) return new int[] { };
            string[] ss = s.Split(' ');
            int[] Res = new int[ss.Length];
            for (int i = 0; i < ss.Length; i++) Res[i] = int.Parse(ss[i]);
            return Res;
        }
        static void print(object j) { Console.WriteLine(j.ToString()); }
        static void print(string j) { Console.WriteLine(j); }
        static void Main(string[] args)
        {
            int[] K = cins();
            int H = K[0], W = K[1];
            string[] SS = new string[H];
            for (int i = 0; i < H; i++)
                SS[i] = "#"+Console.ReadLine()+"#";
            print(new string('#',W+2));
            foreach (string s in SS) print(s);
            print(new string('#', W + 2));
            Console.ReadLine();
        }
    }
}