Problem:
Print a Frame

Draw a frame which has a height of H cm and a width of W cm. For example, the following figure shows a frame which has a height of 6 cm and a width of 10 cm.

##########
#........#
#........#
#........#
#........#
##########

Input

The input consists of multiple datasets. Each dataset consists of two integers H and W separated by a single space.

The input ends with two 0 (when both H and W are zero).

Output

For each dataset, print the frame made of '#' and '.'.

Print a blank line after each dataset.

Constraints

3 ≤ H ≤ 300

3 ≤ W ≤ 300

Sample Input

3 4
5 6
3 3
0 0

Sample Output

####
#..#
####

######
#....#
#....#
#....#
######

###
#.#
###

Solution in JAVA (judge verdict: Wrong Answer)

import java.util.Scanner;

public class Main{
	public static void main(String[] args){

		Scanner scan = new Scanner(System.in);

		while(true){
			
			int h = scan.nextInt();
			int w = scan.nextInt();

			if(h == 0 && w == 0){
				break;
			}else{
				for(int a = 0; a < h; a++){
					for(int b = 0; b < w; b++){
						if(a == 0){
							System.out.print("#");
						}else if(b == 0 || b == w - 1){
							System.out.print("#");
						}else{
							System.out.print(".");
						}
					}
					System.out.println();
				}
				System.out.println();
			}
		}
	}
}