最好的性能改进是从非工作状态到工作状态的转变。
The concept of NP-completeness has provided a powerful tool for understanding the complexity of computational problems.
The greatest enemy of a good plan is the dream of a perfect plan.
每一个数学问题都是一个等待解决的谜题,每一个解决方案都是迈向更深入理解的一步。