—— 请按键盘 空白键 开始游戏 ——

"War is just a series of moments when you don't die, strung together by fear and luck."
"In the heart of every exile, there is a homeland that never leaves."
"Experience is simply the name we give our mistakes."
一个问题如果在计算机上可以快速解决,那么它属于P类问题;如果一个解可以快速验证,那么它属于NP类问题。
在四月一日时,回想一下这一年来的其他364天自己在做些什么。