n = int(input())

empty = n - 1
stars = 1

for i in range(1, n + 1):
    print(" " * empty + "* " * stars)
    empty -= 1
    stars += 1

high_down = n - 1
down_empty = 1
down_stars = n - 1
for j in range(1, high_down + 1):
    print(" " * down_empty + "* " * down_stars)
    down_empty += 1
    down_stars -= 1