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 sc = new Scanner(System.in);

	            while(true) {
	            int  H = sc.nextInt();
	            int W=sc.nextInt();	
	            if(W==0 && H==0)
	            		break;
	            	for(int i=0;i<W;i++)
	            		System.out.print("#");
	            	System.out.println();
	            	for(int i=2;i<H;i++) {
	            		System.out.print("#");
	            		for(int j=2;j<W;j++) {
	            			System.out.print(".");
	            	}
	            	System.out.println("#");
	            }
	            	for(int i=0;i<W;i++)
	            	System.out.print("#");
	            }
	            sc.close();
	    }
	}