摘要: "传送门" 可持久化线段树 建树、单点修改、单点查询 cpp include include include define MAXN (1000005 20) int root[MAXN]; inline int read() { int flag = 1,num = 0; char ch = ge 阅读全文
posted @ 2019-02-05 22:21 Neworld1111 阅读(138) 评论(0) 推荐(0) 编辑