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# ###