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.io.InputStreamReader;
import java.util.Scanner;
public class Main{
	public static void main (String args[]){
		Scanner sc=new Scanner(new InputStreamReader(System.in));
		while(true){
			int h=sc.nextInt();
			int w=sc.nextInt();
			for(int i=0;i<w;i++) System.out.print("#");	
			System.out.println("");
			for(int i=2;i<=h-1;i++){
				System.out.print("#");
				for(int j=2;j<=w-1;j++) System.out.print(".");
				System.out.print("#");
				System.out.println("");
			}
			for(int i=0;i<w;i++) System.out.print("#");
			System.out.println("");
			System.out.println("");
			if(h==0&&w==0) break;
		}
		sc.close();
	}
}