Problem 1: 2021 (100pts)

用数字和+,*和-运算符写一个最酷炫的表达式，来替换掉下面twenty_twenty_one函数中的下划线。

def twenty_twenty_one():
    """Come up with the most creative expression that evaluates to 2021,
    using only numbers and the +, *, and - operators.

    Expected result:
    >>> twenty_twenty_one()
    2021
    """
    return ______