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 Ruby (2.7.1) (judge verdict: Accepted)

h, w = gets.chomp.split(" ").map(&:to_i)
ar = []
arr = Array.new(w+2,"#")
ar << arr
h.times do |i|
    a = gets.chomp.split("")
    a.unshift("#")
    a.push("#")
    ar << a
end
ar << arr
ar.each do |i|
    i.each do |j|
        print j
    end
    print "\n"
end