The program must accept a string S as the input. The program must print the characters in the string S
based on the following conditions.
 - The characters in the string S must be printed in V-shape and inverted V-shape in (L+1)/2 lines as shown
in the Example Input/Output section, where L is the length of the string.
 - The asterisks must be printed instead of the empty spaces in the pattern.
Note: The length of S is always odd.

Boundary Conditions(s):
3 <= Lengthof S <= 99 

Input Format:
The first line contains S. 

Output Format:
the first (L+1)/2 lines contain the combined pattern as shown in the Example Input/Output section.

Example Input/Output 1:
Input:
skillrack

Output:

s***l***k 
*k*l*r*c* 
**i***a** 
*k*l*r*c* 
s***l***k 
Explanation: 
Here the string S = skillrack. 

The V pattern of the string is given below. 
s*******k 
*k*****c* 
**i***a** 
***l*r*** 
****l**** 

The inverted V pattern of the string is given below. 
****l**** 
***l*r*** 
**i***a** 
*k*****c* 
s*******k 

The combined pattern(V and Inverted V) is given below. 
s***l***k 
*k*l*r*c* 
**i***a** 
*k*l*r*c* 
s***l***k 

Example Input/Output 2: 
Input: 
ABCDEFGHIJK 

Output: 
A****F****K 
*B**E*G**J* 
**CD***HI** 
**CD***HI** 
*B**E*G**J* 
A****F****K


Solution:

s=input().strip()
l=len(s)
st=((l+1)//2)-1
et=((l+1)//2)-1
for i in range((l+1)//2):
    for j in range(l):
        if(i==j):
            print(s[i],end="")
        elif(l-1-i==j):
            print(s[l-1-i],end="")
        elif(j==st):
            print(s[st],end="")
        elif(j==et):
            print(s[et],end="")
        else:
            print("*",end="")
    st-=1
    et+=1
    print()