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 (1.42.0) (judge verdict: Accepted)

use proconio::{input, fastout};
use proconio::marker::{Chars};
use proconio::marker::Usize1;
use std::cmp::*;

macro_rules! debug {
      ($($a:expr),*) => {
          eprintln!(concat!($(stringify!($a), " = {:?}, "),*), $($a),*);
    }
}

#[fastout]
fn main() {
    input!{
        h: usize,
        w: usize,
    }

    let mut b: Vec<Vec<char>> = vec![vec!['#';w+2];1];
    for i in 0..h {
        let mut tmp: Vec<char> = vec!['#';1];
        input!{
            c: Chars,
        }
        tmp.extend(c);
        tmp.push('#');
        b.push(tmp);
    }
    b.push(vec!['#';w+2]);

    for i in 0..h+2 {
        for j in 0..w+2 {
            print!("{}",b[i][j]);
        }
        print!("\n");
    }
    print!("\n");

}