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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.*;

public class Main {

    public static void main(String args[]) {

        // 入力
        Scanner sc = new Scanner(System.in);
        int h = Integer.parseInt(sc.next());
        int w = Integer.parseInt(sc.next());
        char[][] a = new char[h][w];
        for (int i = 0; i < h; i++) {
            a[i] = sc.next().toCharArray();
        }
        sc.close();

        // 主処理
        String head = "";
        for (int i = 0; i < w + 2; i++) {
            head += "#";
        }

        StringBuilder sb = new StringBuilder();
        sb.append(head + "\n");
        for (int i = 0; i < h; i++) {
            String line = "#";
            for (int j = 0; j < w; j++) {
                line += a[i][j];
            }
            line += "#";
            sb.append(line + "\n");
        }
        sb.append(head);

        String result = sb.toString();

        // 出力
        System.out.println(result);
    }
}