#include
#include
#include
#include
#include
using namespace std;
const int MAXN=330;
const double eps=1e-4; double p[MAXN][2];
double xx1,yy1,xx2,yy2; double dis(int i,int j)
{ return sqrt((p[i][0]-p[j][0])*(p[i][0]-p[j][0])+(p[i][1]-p[j][1])*(p[i][1]-p[j][1]));
} void get_center_point(int a...