Score : $200$ points
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 $1$.
Input is given from Standard Input in the following format:
$H$ $W$ $a_{11}$ $...$ $a_{1W}$ $:$ $a_{H1}$ $...$ $a_{HW}$
Print the image surrounded by a box that consists of #
and has a thickness of $1$.
2 3 abc arc
##### #abc# #arc# #####
1 1 z
### #z# ###