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 C (GCC 9.2.1) (judge verdict: Accepted)

#include <stdio.h>

int main(void){
    int h, w;
    char a[110][110]={};
    scanf("%d%d", &h, &w);
    for(int j=0; j<w+2; j++) a[0][j] = '#', a[h+1][j] = '#';
    for(int i=1; i<h+1; i++){
        scanf("%s", &a[i][1]);
        a[i][0] = '#', a[i][w+1] = '#';
    }
    for(int i=0; i<h+2; i++) printf("%s\n", a[i]);
    return 0;
}