[백준/Python] 2446 - 별 찍기 - 9

https://www.acmicpc.net/problem/2446

n = int(input())

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

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