def p(n):
for i in range(n):
print(" "*(n-i-1),end="")
print("* "*(i+1))
for j in range(n-1, 0, -1):
print(" "*(n-j),end="")
print("* "*(j))
star_num = int(input("Enter a number that shows diameters of your diamond shape: "))
print(p(star_num))