摘要: #include<iostream> #include<cstdio> #include<algorithm> #include<cstring> #define ls (p<<1) #define rs ((p<<1)|1) #define l(x) tree[x].l #define r(x) 阅读全文
posted @ 2020-09-10 20:37 mybing 阅读(97) 评论(0) 推荐(0) 编辑