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 Python3 (judge verdict: WA: Presentation Error)

while True:
    Input = input().split()
    H = int(Input[0])
    print("")
    W = int(Input[1])
    if H == 0 and W == 0:
        break
    if H <= 300 and W <=300:
        if H >= 3 and W <= 100:
            for i in range(H):
                for j in range(W):
                    if j == W - 1:
                        print("#")
                    elif i == 0 or i == H - 1 or j == 0:
                         print("#",end="")
                    else:
                        print(".",end="")