55. Write a code to generate a butterfly pattern printing using stars.

Write a code to generate a butterfly pattern printing using stars.

Input Description:
Given an integer R indicates number of rows.

Where 1<=R<=100.

Output Description:
Print the butterfly pattern printing using stars based on the given integer R.

Sample Input :
5
Sample Output :
*        *
**      **
***    ***
****  ****
**********
**********
****  ****
***    ***
**      **
*        *



n=int(input())

for i in range(n):
  for j in range(i+1):
    print("*",end="")

  for j in range(i,n-1):
    print(" ", end="")

  for j in range(i+1,n):
    print(" ",end="")

  for j in range(i+1):
    print("*",end="")
  
  print()

for i in range(n):
  for j in range(i,n):
    print("*",end="")
  
  for j in range(i):
    print("  ",end="")

  for j in range(i-1):
    print("", end="")

  for j in range(i,n):
    print("*",end="")

  print()