h = eval(input("Enter diamond's height: "))
for x in range(h):
print(" " * (h - x), "*" * (2*x + 1))
for x in range(h - 2, -1, -1):
print(" " * (h - x), "*" * (2*x + 1))
#OUTPUT
# Enter diamond's height: 4
# *
# ***
# *****
# *******
# *****
# ***
# *