Designer Door Mat

 

Mr. Vincent works in a door mat manufacturing company. One day, he designed a new door mat with the following specifications:
Mat size must be X. ( is an odd natural number, and  is  times .)
The design should have 'WELCOME' written in the center.
The design pattern should only use |, . and - characters.
Sample Designs
    Size: 7 x 21 
    ---------.|.---------
    ------.|..|..|.------
    ---.|..|..|..|..|.---
    -------WELCOME-------
    ---.|..|..|..|..|.---
    ------.|..|..|.------
    ---------.|.---------
    
    Size: 11 x 33
    ---------------.|.---------------
    ------------.|..|..|.------------
    ---------.|..|..|..|..|.---------
    ------.|..|..|..|..|..|..|.------
    ---.|..|..|..|..|..|..|..|..|.---
    -------------WELCOME-------------
    ---.|..|..|..|..|..|..|..|..|.---
    ------.|..|..|..|..|..|..|.------
    ---------.|..|..|..|..|.---------
    ------------.|..|..|.------------
    ---------------.|.---------------
Input Format
A single line containing the space separated values of  and .
Constraints
Output Format
Output the design pattern.
Sample Input
9 27
Sample Output
------------.|.------------
---------.|..|..|.---------
------.|..|..|..|..|.------
---.|..|..|..|..|..|..|.---
----------WELCOME----------
---.|..|..|..|..|..|..|.---
------.|..|..|..|..|.------
---------.|..|..|.---------
------------.|.------------

Solution :-

r ,c = map (int , input().split())  
for i in range (1,r ,2):
    print ((".|."*i).center(c,'-'))
print(('WELCOME').center(c,'-'))
for i in range (r-2 , -1 ,-2):
    print ((".|."*i).center(c,'-'))