—— 请按键盘 空白键 开始游戏 ——

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。
I don't like to be defined by one thing. I'm more than just a tennis player.
君子作战虽然布阵,但还是以勇敢为本。
The most dangerous stories are the ones we tell ourselves.