—— 请按键盘 空白键 开始游戏 ——

Every problem in NP can be reduced to the satisfiability problem, which is the cornerstone of computational complexity theory.
O amor é a única coisa que cresce quando se reparte.
To do mathematics is to engage in an act of creation and discovery simultaneously.
作为一个有创造力的人,最危险的想法是认为你知道自己在做什么。