include iostream include vector include algorithm using namespace std

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

struct koor
{
	int x;
	int y;
};
vector <koor> vec;
bool mn(int n)
{
	koor sered;
	for (int i = 0; i < n; i++)
	{
		sered.x = vec[i].x;
		sered.y = vec[i].y;
		vec[i].x -= sered.x;
		vec[i].y -= sered.y;
	}
	sered.x /= n;
	sered.y /= n;
	sort(vec.begin, vec.end, cmp);
	for ()
}
bool cmp(koor a, koor b)
{
	if (vect(a, b) > 0)
	{
		return true;
	}
	return false;
}
int vect(koor a, koor b)
{
	return a.x*b.y - b.x*a.y;
}
int main()
{
	int n;
	cin >> n;
	for (int i = 0; i < 500000000; i++)
	{
		for (int j = 0; j < n; j++)
		{
			koor qwe;
			qwe.x = rand() % 50000;
			qwe.y = rand() % 50000;
			while (qwe.x + qwe.y > 50000)
			{
				qwe.x = rand() % 50000;
				qwe.y = rand() % 50000;
			}
			vec.push_back(qwe);
			
		}
	}
}