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)

namespace ABC062_PictureFrame
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;

    class Program
    {
        static void Main(string[] args)
        {
            // 入力
            var input = Console.ReadLine().Split(' ').Select(elem => int.Parse(elem)).ToArray();
            int H = input[0];
            int W = input[1];
            List<string> lineList = new List<string>();
            for (int i = 0; i < H; i++) lineList.Add(Console.ReadLine());

            // 処理
            string frame = string.Empty;
            for (int i = 0; i < W; i++) frame += "#";
            lineList.Insert(0, frame);
            lineList.Add(frame);
            for (int index = 0; index < lineList.Count; index++) lineList[index] = "#" + lineList[index] + "#";

            // 出力
            foreach (var line in lineList)
            {
                Console.WriteLine(line);
            }
        }
    }
}