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My code solves every case in this forum and i have epsilon 1e-9 i dont know whats wrong :-? please post more testcases

#include <cstdio>
#include <iostream>
#include <cmath>
#include <cstdlib>
using namespace std;
typedef long long Long;
struct Pt
{
double x,y;
Pt(double a,double b)
{
x = a; y ...