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;

fn main() {
    let mut input = String::new();
    io::stdin().read_line(&mut input).unwrap();
    let split: Vec<&str> = input.as_str().split_whitespace().collect();

    let h: i64 = split[0].parse().unwrap();
    let w: i64 = split[1].parse().unwrap();

    for n in 0..w + 2 {
        print!("#");
    }

    // = /n
    println!("");

    for n in 0..h {
        let mut input = String::new();
        io::stdin().read_line(&mut input).unwrap();
        let pict = input.as_str();
        println!("#{}#", pict.replace("\n", ""));
    }

    for n in 0..w + 2 {
        print!("#");
    }
}