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+2][W+2];
for (int i = 0; i < H+2; i++){
  for (int j = 0; j < W+2; j++){
    a[i][j]='#';
  }
}

for (int i = 1; i <= H; i++){
  for (int j = 1; j <= W; j++){
    a[i][j]=getchar();
    if (a[i][j]=='\n'){ j--;}
  }
}

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

return 0;

}