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P与NP问题是计算机科学中最重要的一个问题之一。
Art always has to resist something. If it no longer resists, it is no longer art.
Love is free; to promise for ever to love the same woman is not less absurd than to promise to believe the same creed.
做出伟大工作的唯一方法就是热爱你所做的事情。