Question

This code is in Python:

Fox Ciel starts to learn programming. The first task is drawing a fox! However, that turns out to be too hard for a beginner, so she decides to draw a snake instead.

A snake is a pattern on a n by m table. Denote c-th cell of r-th row as (r, c). The tail of the snake is located at (1, 1), then it's body extends to (1, m), then goes down 2 rows to (3, m), then goes left to (3, 1) and so on.

Your task is to draw this snake for Fox Ciel: the empty cells should be represented as dot characters ('.') and the snake cells should be filled with number signs ('#').

Consider sample tests in order to understand the snake pattern.

Input

The only line contains two integers: n and m (3 ≤ n, m ≤ 50).

n is an odd number.

Output

Output n lines. Each line should contain a string consisting of m characters. Do not output spaces.

Examples

input

Copy

3 3

output

Copy

###
..#
###

input

Copy

3 4

output

Copy

####
...#
####

input

Copy

5 3

output

Copy

###
..#
###
#..
###

input

Copy

9 9

output

Copy

#########
........#
#########
#........
#########
........#
#########
#........
#########

Answer 1

CODE:

n = int(input("Enter rows::"))
m = int(input("Enter columns::"))

#for n rows
for i in range(1,n+1):
if(i%2 == 0):
if(i%4 ==0):
print '#' + '.'*(m-1) #appending '#' with '.'
else:
print '.'*(m-1) + '#' #appending '.' with '#'
else:
print '#'*m #print m numbet of '#' characters

CODE SCREENSHOT:

CODE OUTPUT:

Hope this will help you. Let me know, still if you have any queries??