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 PHP (7.4.4) (judge verdict: Accepted)

<?php
  list($h, $w) = explode(" ", trim(fgets(STDIN)));

  $a = [];
  for($i=0;$i<$h;$i++){
    list($a[]) = explode(" ", trim(fgets(STDIN)));
  }

  for($i=0;$i<$w+2;$i++){
    echo "#";
  }
  echo PHP_EOL;
  for($i=0;$i<$h;$i++){
    echo "#";
    echo $a[$i];
    echo "#".PHP_EOL;
  }
  for($i=0;$i<$w+2;$i++){
    echo "#";
  }