# Fayllar, pathlib va xavfsiz yo‘llar
# Faqat sintetik, lokal o‘quv misoli.

from pathlib import PurePosixPath
names = ["reports/day.txt", "../secret.txt", "logs/auth.txt"]
safe = [name for name in names if ".." not in PurePosixPath(name).parts]
print(len(safe))