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 (2.3.3) (judge verdict: Accepted)

# 解説通りに組んでみた
H, W = gets.split.map(&:to_i)
# ＃で埋めた配列を作る
b = Array.new(H + 2){Array.new(W + 2){"#"}}
# 入力された文字列を挿入する
H.times do |i|
    a = gets.chomp.split("")
    b[i + 1][1..W] = a
end
# 配列を展開して出力
b.each do |s|
    puts s.join
end