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5971: Cable master 时间限制(普通/Java):1000MS/3000MS 内存限制:65536KByte总提交: 81 测试通过:20 描述 Inhabitants of the Wonderland have decided to hold a regional program Read More

#include<bits/stdc++.h>using namespace std;#define maxn 510const double eps=1E-8;int sig(double d){ return(d>eps)-(d<-eps);}struct Point{ double x,y; Read More