—— 请按键盘 空白键 开始游戏 ——

泉水虽可共享,但谁又能否认,在水罐中所盛的水只属于取水的人呢?
Though the water running in the fountain be every one's, yet who can doubt, but that in the pitcher is his only who drew it out?
"The challenge in computer science is not just to solve problems, but to find the right problems to solve."