—— 请按键盘 空白键 开始游戏 ——

I like the freedom of making my own choices.
The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.
I do not fear computers. I fear the lack of them.
要是命运将会使我成为君王,那么也许命运会替我加上王冠,用不着我自己费力。