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);
		while(true){
			int intH = sc.nextInt();
			int intW = sc.nextInt();
			int h = intH - 1;
			int w = intW - 1;

			//??????H???W???0?????£???????????????????????????
			if((intH == 0) && (intW == 0)){
				break;
			}
			//??????
			
			for (int i = 0; i < intH; i++) {
				for (int j = 0; j < intW; j++) {
					if (i == 0 || i == h || j == 0 || j == w ) {
						System.out.print("#");
					}else {
						System.out.print(".");
					}
				}
			System.out.println("");
			}
		}
	}
}