一个问题如果在计算机上可以快速解决,那么它属于P类问题;如果一个解可以快速验证,那么它属于NP类问题。
The learn-it-all does better than the know-it-all.
The biggest risk is not taking any risk. In a world that's changing quickly, the only strategy that is guaranteed to fail is not taking risks.