第二题 ac #include <bits/stdc++.h> using namespace std; struct user{ float x,y; int b; int c; }; struct area{ int type; float dx,dy,dx1,dy1; float cx,cy,cr; bool inArea(user a){ if(type == 0){ if(sqrt((a.x - cx) * (a.x - cx) + (a.y - cy) * (a.y - cy)) <= cr) return true; }else{ if(a.x >= dx...