—— 请按键盘 空白键 开始游戏 ——

A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.
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。
A dreamer is one who can only find his way by moonlight, and his punishment is that he sees the dawn before the rest of the world.
The truth is not always beautiful, nor beautiful words the truth.
Innovation is not just about creating something new; it's about solving real problems in ways that matter.
A good programmer is someone who always looks both ways before crossing a one-way street.