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 C (judge verdict: Time Limit Exceeded)

#include <stdio.h>

int main(void)
{
	int i=0,j=0,k=0,H=0,W=0;
	for (i = 0; i < 300; ++i)
	{
		scanf("%d %d",&H,&W);
		if(H==0&&W==0)
		{
			break;
		}
		else
		{
			for (i = 0; i < H; ++i)
			{
				if(i==0)
				{
					for ( j = 0; j < W ; ++i)
					{
						printf("#");
					}
					printf("\n");
				}
				else if (i>0&&i<H-1)
				{
					for ( j = 0; j < W; ++j)
					{
						if(j==0)
						{
							printf("#");
						}  
						if(j>0&&j<W-1)
						{
							printf(".");
						}
						if (j==W-1)
						{
							printf("#\n");
						}
					} 
			        
			    }
			    else if(i==H-1)
			    {
			    	for ( j = 0; j < W ; ++i)
					{
						printf("#");
					}
					printf("\n");
			    }
				printf("\n");
				printf(" \n");
			}
		}
	}
	

	return 0;
}