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(){
  int h,w;
  scanf("%d%d",&h,&w);
  char a[h+3][w+3];
  int i,j;
  for(i=0;i<=h+1;i++){
    if(i==0 || i==h+1){
      for(j=0;j<=w+1;j++)
        a[i][j]='#';
    }
    else{
      for(j=0;j<=w;j++)
        scanf("%c",&a[i][j]);
      a[i][0]='#';
      a[i][w+1]='#';
    }
  }
  for(i=0;i<=h+1;i++){
    for(j=0;j<=w+1;j++)
      printf("%c",a[i][j]);
    puts("");
  }
  return 0;
}