—— 请按键盘 空白键 开始游戏 ——

唯一的好是知识,唯一的恶是无知。
There is only one good, which is knowledge, and one evil, which is ignorance.
Love doesn't need a reason. It speaks from the irrational wisdom of the heart.
The P versus NP problem is one of the most important unsolved problems in computer science.