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# (.NET Core 3.1.201) (judge verdict: Accepted)

using System;
using System.Linq;
namespace Sample
{
  class Sample
  {
    static void Main(string[] args)
    {
    string[] str1=Console.ReadLine().Split(' ');
      int H=int.Parse(str1[0]);
      int W=int.Parse(str1[1]);
      for(int i=1;i<=W+2;i++){
        Console.Write("#");
      }
      Console.Write("\n");
      for(int ii=1;ii<=H;ii++){
        string str2=Console.ReadLine();
        Console.WriteLine("#"+str2+"#");
      }
      for(int i=1;i<=W+2;i++){
        Console.Write("#");
      }
      Console.Write("\n");
    }
    
  }

}