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: WA: Presentation Error)

import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int h,w,i,a,b;

		for(i=0;i<=1;){
			h = sc.nextInt(); w = sc.nextInt();
			if(i!=0)
				break;
			if(h<=0){
				if(w<=0){
					i =2;
				}
			}
			System.out.println("");
				for(b=0;b<w;b++){
					System.out.print("#");
				}System.out.println("");
				for(a=2;a<h;a++){
					for(b=0;b<w;b++){
						System.out.print("#");
						for(b=2;b<w;b++){
							System.out.print(".");
						}
						System.out.print("#");
						System.out.println("");
				}
				}
				for(b=0;b<w;b++){
					System.out.print("#");
				}
				System.out.println("");
				System.out.println("");
				if(i!=0)
					break;
			}
			System.out.println("");
			sc.close();
		}
}