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 Rust (1.15.1) (judge verdict: Accepted)

use std::io;
use std::str::FromStr;

fn main() {
    let stdin = io::stdin();
    let mut buf = String::new();
    stdin.read_line(&mut buf).ok();

    let mut it = buf.split_whitespace().map(|n| u64::from_str(n).unwrap());
    let (a, b) = (it.next().unwrap(), it.next().unwrap());

    for _ in 0..(b + 2) {
        print!("#");
    }
    println!("");
    for _ in 0..a {

        let mut buf = String::new();
        stdin.read_line(&mut buf).ok();

        let mut it = buf.split_whitespace().map(|n| String::from_str(n).unwrap());
        let s = it.next().unwrap();
        println!("#{}#", s);
    }


    for _ in 0..(b + 2) {
        print!("#");
    }
    println!("");

}