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 H = sc.nextInt();
			//?¨?
			int W = sc.nextInt();
			//??\?????????0????????????
			if(H ==0 && W ==0){
				break;
			}
			//???????????¶???
			for(int i =1; i <=H; i++){
				//?¨?????????¶???
				String s = "";
				for(int j =1; j<=W; j++){
					//
					if(i ==1 || i==H || j==1 || j==W){
						s +="#";
					}else{
						s += ".";
					}
				}
				//
				System.out.println(s);
			}
		}
	}
}