—— 请按键盘 空白键 开始游戏 ——

自由是无价之宝。
A liberdade é um bem que não tem preço.
天下的一切事物不可以没有标准,做人要有做人的标准,即原则;做事要有做事的标准,即规则;治国要有治国的标准,即法则。不遵循一定的标准而能成事者,自古以来是没有的。
We are all prisoners of our own experiences, and no one can truly understand another's pain.
The concept of NP-completeness has provided a powerful tool for understanding the complexity of computational problems.