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[] kotai) {
	Scanner sc=new Scanner(System.in);
	while(sc.hasNext()) {
	int a=sc.nextInt();
	int b=sc.nextInt();
	for(int i=0;i<=a;i++) {
		for(int j=0;j<b;j++) {
			if(i!=0&&i!=a) {
				if(j!=0 && j!=b-1) {
		   System.out.print(".");
				}
				else {
					System.out.print("#");
				}
			}
			else {
				System.out.print("#");
			}
		}
		System.out.println();
	}
	System.out.println();
	}
}
}