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

struct Point {
    double x, y;
};

int main () {
    int n;
    cin >> n;
    vector <Point> p (n);
    for (int i = 0; i < n; i++) {
        cin >> p[i].x >> p[i].y;
    }
    return 0;
}