#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
typedef pair<LL, LL> PII;
 
// chmax, chmin
template <class T>
inline bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <class T>
inline bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return 1;
  }
  return 0;
}
 
template <typename T>
function<T(T, T)> op_max = [](T a, T b) -> T { return max(a, b); };
template <typename T>
function<T(T, T)> op_min = [](T a, T b) -> T { return min(a, b); };
 
template <typename T>
function<T(T, T)> op_sum = [](T a, T b) -> T { return a + b; };
 
namespace detail {
template <typename T, std::size_t NDIMS>
struct vector_builder {
  using type = std::vector<typename vector_builder<T, NDIMS - 1>::type>;
 
  static type make(std::vector<std::size_t> dims, const T& v = {}) {
    const auto vec = std::vector<T>(dims.empty() ? 0 : dims.back(), v);
    if (!dims.empty()) dims.pop_back();
    return vector_builder<std::vector<T>, NDIMS - 1>::make(dims, vec);
  }
};
 
template <typename T>
struct vector_builder<T, 1> {
  using type = std::vector<T>;
 
  static type make(std::vector<std::size_t> dims, const T& v = {}) {
    return type(dims.empty() ? 0 : dims.back(), v);
  }
};
}  // namespace detail
 
template <typename T, typename... SIZE_T>
auto exvector(const T& v, SIZE_T... dims) {
  static_assert(sizeof...(dims) != 0, "invalid dimension");
  std::vector<std::size_t> vec_dims{dims...};
  return detail::vector_builder<T, sizeof...(dims)>::make(vec_dims, v);
}
 
using namespace std;
//********************  dumps ************************//
 
template <typename T>
void dump(const T& data, vector<int>& iter) {
  cout << data << " ";
}
template <typename T>
void dump(const vector<T>& data, vector<int>& iter) {
  for (auto elem : data) dump(elem, iter);
  cout << endl;
}
 
template <typename T>
void dump(const vector<vector<T>>& data, vector<int>& iter) {
  for (auto elem : iter) {
    cout << "[" << elem << "]";
  }
  cout << endl;
  for (int i = 0; i < data.size(); i++) {
    iter.push_back(i);
    dump(data[i], iter);
    iter.pop_back();
  }
  cout << endl;
}
 
template <typename T>
void dump(const vector<T>& data, int dummy) {
  for (int i = 0; i < data.size(); i++) {
    cout << "[" << i << "] " << data[i] << endl;
  }
}
template <typename T>
void dump(const T& data) {  // T : data, U = base type val.
  vector<int> iter;
  dump(data, iter);
}
///////////////////////////////////////////////
 
#define EPS (1e-10)
struct Point {
  LL x, y;
  Point() {}
  Point(LL x, LL y) : x(x), y(y) {}
  Point operator+(Point p) { return Point(x + p.x, y + p.y); }
  Point operator-(Point p) { return Point(x - p.x, y - p.y); }
  Point operator*(double k) { return Point(x * k, y * k); }
  Point operator/(double k) { return Point(x / k, y / k); }
  LL norm() { return x * x + y * y; }
  LL abs() { return sqrt(norm()); }
 
  bool operator<(const Point& p) const {
    return x != p.x ? x < p.x : y < p.y;
    // grid-point only
    // return !equals(x,p.x)?x<p.x:!equals(y,p.y)?y<p.y:0;
  }
 
  bool operator==(const Point& p) const {
    return fabs(x - p.x) < EPS && fabs(y - p.y) < EPS;
  }
};
 
LL dot(Point a, Point b) { return a.x * b.x + a.y * b.y; }
 
LL cross(Point a, Point b) { return a.x * b.y - a.y * b.x; }
 
static const int CCW_COUNTER_CLOCKWISE = 1;
static const int CCW_CLOCKWISE = -1;
static const int CCW_ONLINE_BACK = 2;
static const int CCW_ONLINE_FRONT = -2;
static const int CCW_ON_SEGMENT = 0;
int ccw(Point p0, Point p1, Point p2) {
  Point a = p1 - p0;
  Point b = p2 - p0;
  if (cross(a, b) > EPS) return CCW_COUNTER_CLOCKWISE;
  if (cross(a, b) < -EPS) return CCW_CLOCKWISE;
  if (dot(a, b) < -EPS) return CCW_ONLINE_BACK;
  if (a.norm() < b.norm()) return CCW_ONLINE_FRONT;
  return CCW_ON_SEGMENT;
}
 
typedef vector<Point> Polygon;
Polygon andrewScan(Polygon s) {
  Polygon u, l;
  if (s.size() < 3) return s;
  sort(s.begin(), s.end());
  u.push_back(s[0]);
  u.push_back(s[1]);
  l.push_back(s[s.size() - 1]);
  l.push_back(s[s.size() - 2]);
  for (int i = 2; i < (int)s.size(); i++) {
    for (int n = u.size();
         n >= 2 && ccw(u[n - 2], u[n - 1], s[i]) != CCW_CLOCKWISE; n--) {
      u.pop_back();
    }
    u.push_back(s[i]);
  }
  for (int i = s.size() - 3; i >= 0; i--) {
    for (int n = l.size();
         n >= 2 && ccw(l[n - 2], l[n - 1], s[i]) != CCW_CLOCKWISE; n--) {
      l.pop_back();
    }
    l.push_back(s[i]);
  }
  reverse(l.begin(), l.end());
  for (int i = u.size() - 2; i >= 1; i--) l.push_back(u[i]);
  return l;
}
double PI = 3.141592653589793238;
 
int main() {
  Polygon p;
  int N;
  cin >> N;
  for (int i = 0; i < N; i++) {
    int x, y;
    cin >> x >> y;
    p.push_back(Point(x, y));
  }
  Polygon conv = andrewScan(p);
  conv.push_back(conv[0]);
  vector<double> ret;
  for (int i = 0; i < conv.size() - 1; i++) {
    Point pt = conv[i + 1] - conv[i];
    ret.push_back(atan2(pt.y, pt.x));
  }
  ret.push_back(ret[0]);
  map<Point, double> result;
  for (int i = 0; i < ret.size() - 1; i++) {
    double base = ret[i + 1] - ret[i];
    if (base < 0) base += 2 * PI;
    result[conv[i + 1]] = base;
  }
  cout << setprecision(10);
  for (auto pt : p) {
    cout << result[pt] / (PI * 2) << endl;
  }
 
  return 0;
}

Measured memory_bytes: 384