NP中的每个问题都可以归约为可满足性问题,这是计算复杂性理论的基石。
I have never been interested in the social aspects of architecture.
世界上充满了神奇的事物,耐心地等待着我们的感官变得更加敏锐。
Nature doesn’t care about your plans. It will test you, and you have to be ready.