The art of algorithm design is not just in solving problems, but in discovering new ways to think about them.
数学的美只向更有耐心的追随者展示。
你们是被惯性所引导，还是追随自己内心的热情？
When you are stuck， explain your problem to others. Often simply laying out a problem will present a solution. Make “explaining the problem” part of your troubleshooting process.