import random
from math import sqrt, cos
from cmath import sqrt as csqrt
import my_factorial


# my_list = ["1C", "Google", "Telegram", "Yandex", "Rambler", "ТЫ"]
# print(random.choice(my_list), "уничтожен!")

# print(sqrt(4))
# print(cos(0.5))
# print(csqrt(-1))

print(my_factorial.lavash_factorial(int(input("Введите число"))))