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;

class Main
{
	public static void main ( String[] args ) {
		Scanner sc = new Scanner ( System.in );
		
		int H = 0;
		int W = 0;
		
		H = sc.nextInt ();
		W = sc.nextInt ();
		
		for ( int i = 0; i < H; i++ ) {
			for ( int j = 0; j < W; j++ ) {
				if ( j == 0 || j == W - 1 ) {
					System.out.print ( "#" );
				} else if ( i == 0 || i == H - 1 ) {
					System.out.print ( "#" );
				} else {
					System.out.print ( "." );
				}
			}
			
			System.out.println ();
			
		}
	}
}