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 5.4.1) (judge verdict: Accepted)

#include <stdio.h>

int main()
{
  int H, W;
  scanf("%d %d", &H, &W);
  char a[H][W + 1];
  for(int i = 0; i < H; i++){
    scanf("%s", a[i]);
  }

  char b[H + 2][W + 2];
  for(int i = 0; i < H + 2; i++){
    for(int j = 0; j < W + 2; j++){
      b[i][j] = '#';
    }
  }
  for(int i = 0; i < H; i++){
    for(int j = 0; j < W; j++){
      b[i + 1][j + 1] = a[i][j];
    }
  }
  for(int i = 0; i < H + 2; i++){
    for(int j = 0; j < W + 2; j++){
      printf("%c", b[i][j]);
    }
    printf("\n");
  }
  return 0;
}