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.*;


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