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 Go (1.6) (judge verdict: Accepted)

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)

func nextLine() string {
	sc.Scan()
	return sc.Text()
}

func nextInt() int {
	sc.Scan()
	i, _ := strconv.Atoi(sc.Text())
	return i
}

func nextIntSlice(size int) []int {
	re := make([]int, size)
	for i := 0; i < size; i++ {
		re[i] = nextInt()
	}
	return re
}

func max(a []int) int {
	max := a[0]
	for _, v := range a {
		if v > max {
			max = v
		}
	}
	return max
}

func min(a []int) int {
	min := a[0]
	for _, v := range a {
		if v < min {
			min = v
		}
	}
	return min
}

func main() {
	sc.Split(bufio.ScanWords)
	h, w := nextInt(), nextInt()
	a := make([]string, h)
	for i := 0; i < h; i++ {
		a[i] = nextLine()
	}

	tbframe(w + 2)
	for i := 0; i < h; i++ {
		fmt.Print("#")
		fmt.Print(a[i])
		fmt.Print("#")
		fmt.Println()
	}
	tbframe(w + 2)

}

func tbframe(w int) {
	for i := 0; i < w; i++ {
		fmt.Print("#")
	}
	fmt.Println()
}