n = int(input())
for i in range(1, n + 1, 1):
    print(" " * (n - i) + "*" * (i * 2 - 1) + " " * (n - i))
for i in range(n-1,0,-1):
    print(" " * (n - i) + "*" * (i * 2 - 1) + " " * (n - i))