摘要：
题目描述 Bessie is playing hide and seek (a game in which a number of players hide and a single player (the seeker) attempts to find them after which vari 阅读全文
摘要：
夜深人静写算法（四） - 差分约束： http://www.cppblog.com/menjitianya/archive/2015/11/19/212292.html 位运算： https://baike.so.com/doc/6151456-6364655.html 树状数组： https:// 阅读全文