n = int(input());  
for i in range(1, n//2 +1 ):
    for k in range(1, i):
      print(end=' ')
    for x in range(1 ,n - (i -1)*2+1):
        print('*', end = '')
    print()
for a in range (1, n//2 + 2 ):
    for b in range (1, n // 2 +1 - a + 1 ):
        print('',end=' ')
    for c in range (1, 2*a ):
        print('*' ,end='')
    print()
 

/**************************************************************
	Problem: 1073
	User: admin
	Language: Python
	Result: Accepted
	Time:87 ms
	Memory:34480 kb
****************************************************************/