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def fuc(num):
    """
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    :return: ·µ»ØÊýµÄ½×³Ë
    """
    t = 1
    for i in range(2, num + 1):
        t *= i
    return t

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s1()
s2()
from uiti import fas
from uiti import foo
# Óá°Ä£¿éÃû.º¯ÊýÃû¡±µÄ·½Ê½(ÍêÈ«ÏÞ¶¨Ãû)µ÷Óú¯Êý,
foo.say_hello()
fas.say_hello()

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