计算复杂性理论的发展向我们展示了并非所有问题都是平等的。
My country is the world, and my religion is to do good.
希望是最后死去的东西,也是最先背叛你的东西。
读书时刻苦用心,才能达到一字千金的层次。
The reason for time is so that everything doesn't happen at once.