摘要: #include<bits/stdc++.h> /*一:【准备工作】*/ #define db double #define ll long long #define Vector Point using namespace std; const db eps=1e-8,Pi=acos(-1.0); 阅读全文
posted @ 2023-02-04 12:54 Hanghang007 阅读(70) 评论(0) 推荐(0)