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 <bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define vi vector<int>
#define bn(n) (n).begin(), (n).end()
#define FOR(n) for(int i = 0; i < (int)n; i++)


void solve() {
    int a, b;
    cin >> a >> b;
    for (int i = 0; i < b+2; i++) {
        cout << '#';
    }
    cout << "\n";
    for (int i = 0; i < a; i++) {
        cout << '#';
        string s;
        cin >> s;
        cout << s;
        cout << '#' << "\n";
    }
    for (int i = 0; i < b+2; i++) {
        cout << '#';
    }
}

int main () {
    ios::sync_with_stdio(0);
    cin.tie(0);

    int t = 1, i = 1;
    //cin >> t;
    while(t--) {
        //cout << "Case #" << i << ": ";
        solve();
        //i++;
    }
    return 0;
}