摘要: code: #include<iostream> #include<cstdio> #include<cstdlib> #include<cstring> #include<cmath> #define maxn 500010 using namespace std; template<typena 阅读全文
posted @ 2021-02-22 19:52 DReamLion 阅读(32) 评论(0) 推荐(0) 编辑