#include <bits/stdc++.h>
using namespace std;

#define TRACE(x) x
#define WATCH(x) TRACE(cout << #x" = " << x << endl)
#define WATCHR(a, b) TRACE(for (auto it=a; it!=b;) cout << *(it++) << " "; cout << endl)
#define WATCHC(V) TRACE({cout << #V" = "; WATCHR(V.begin(), V.end());})

#define all(x) (x).begin(), (x).end()

using ll = long long;
using vi = vector<int>;
using vvi = vector<vi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using vb = vector<bool>;
using vs = vector<string>;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

template<typename T> struct point {
    T x, y;
    point() : x(0), y(0) {}
    point(T x, T y) : x(x), y(y) {}
    friend istream& operator >> (istream& i, point& p) { return i >> p.x >> p.y; }
    friend ostream& operator << (ostream& o, const point& p) {
        return o << "(" << p.x << ", " << p.y << ")";
    }

    T norm() const { return x * x + y * y; }
    double len() const { return sqrt(norm()); }
    double ang() const { return atan2(y, x); }
    point<T> conj() const { return { x, -y }; }

    point& operator += (const point& o) { x += o.x; y += o.y; return *this; }
    point& operator -= (const point& o) { x -= o.x; y -= o.y; return *this; }
    point& operator *= (const T& c) { x *= c; y *= c; return *this; }
    point& operator /= (const T& c) { x /= c; y /= c; return *this; }
    friend point operator + (const point& a, const point& b) { return point(a) += b; }
    friend point operator - (const point& a, const point& b) { return point(a) -= b; }
    friend point operator * (const point& a, const T& c) { return point(a) *= c; }
    friend point operator * (const T& c, const point& a) { return point(a) *= c; }
    friend point operator / (const point& a, const T& c) { return point(a) /= c; }

    bool operator == (const point& o) const { return x == o.x && y == o.y; }
    bool operator != (const point& o) const { return x != o.x || y != o.y; }
    bool operator < (const point& o) const { return (x != o.x) ? x < o.x : y < o.y; }
    bool operator > (const point& o) const { return (x != o.x) ? x > o.x : y > o.y; }
    bool operator <= (const point& o) const { return !(*this > o); }

    friend T dot(const point& a, const point& b) { return a.x * b.x + a.y * b.y; }
    friend T cross(const point& a, const point& b) { return a.x * b.y - a.y * b.x; }
    friend T cross(const point& p, const point& a, const point& b) { return cross(a - p, b - p); }

    friend point<T> operator * (const point& a, const point& b) {
        return { a.x * b.x - a.y * b.y, a.x * b.y + a.y * b.x };
    }
    friend point<T> operator / (const point& a, const point& b) {
        return a * b.conj() / b.norm();
    }

    double ang(const point& p, const point& r) const {
        auto a = p - *this, b = r - *this;
        double c = dot(a, b) / (a.len() * b.len());
        return acos(max(-1., min(1., c)));
    }

    point dir() const { return point(*this) / len(); }
    point rotate(const double& ang) const { return *this * point(cos(ang), sin(ang)); }

    T dist(const point& a) const { return (a - *this).len(); }
    T dist(const point& a, const point& b) {
        return abs(cross(*this, a, b)) / a.dist(b);
    }
    point reflect(const point& a, const point& b) const {
        return a + ((*this - a) / (b - a)).conj() * (b - a);
    }
    point foot(const point& a, const point& b) const {
        return (*this + this->reflect(a, b)) / 2;
    }
    friend point extension(const point& a, const point& b, const point& c, const point& d) {
        T x = cross(a, b, c), y = cross(a, b, d);
        return (d * x - c * y) / (x - y);
    }

    friend vector<point> seg_intersect(point a, point b, point c, point d) {
        if (a > b) swap(a, b);
        if (c > d) swap(c, d);

        T a1 = cross(a, b, c), a2 = cross(a, b, d);
        if (a1 > a2) swap(a1, a2);
        if (!(a1 <= 0 && a2 >= 0)) return {};

        if (a1 == 0 && a2 == 0) {
            if (cross(a, c, d) != 0) return {};
            point<T> x1 = max(a, c), x2 = min(b, d);
            if (x1 > x2) return {};
            if (x1 == x2) return { x1 };
            return { x1, x2 };
        }

        point<T> z = extension(a, b, c, d);
        if (a <= z && z <= b) return { z };
        return {};
    }

    using polygon = vector<point<T>>;
    friend ostream& operator << (ostream& o, const polygon& poly) {
        o << "{";
        for (auto pt : poly) o << " " << pt;
        return o << " }";
    }

    string classify(const polygon& p) const {
        bool ans = 0;
        for (int i = 0; i < p.size(); i++) {
            point<T> a = p[i], b = p[(i + 1) % p.size()];
            if (cross(a, b, *this) == 0 && min(a, b) <= *this && *this <= max(a, b))
                return "on";
            if (a.y > b.y) swap(a, b);
            if (a.y <= y && y < b.y && cross(*this, a, b) > 0) ans ^= 1;
        }
        return ans ? "in" : "out";
    }

    friend polygon hull(const vector<point>& pts) {
        point pivot = *min_element(all(pts));
        auto sorted = pts;
        sort(all(sorted), [&pivot](const auto& p, const auto& q) {
            T cp = cross(pivot, p, q);
            if (cp != 0) return cp > 0;
            return pivot.dist(p) < pivot.dist(q);
        });

        int j = 0;
        polygon res(pts.size());
        for (const auto& p : sorted) {
            while (j > 1 && cross(res[j - 2], res[j - 1], p) <= 0)
                j--;
            res[j++] = p;
        }
        res.erase(res.begin() + j, res.end());
        return res;
    }
};

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    cout << setprecision(15);

    int N;
    cin >> N;
    vector<point<ll>> pts(N);
    map<point<ll>, int> inx;
    for (int i = 0; i < N; i++) {
        cin >> pts[i];
        inx[pts[i]] = i;
    }

    vector<double> ans(N);

    pts = hull(pts);

    for (int i = 0; i < pts.size(); i++) {
        auto prv = i ? pts[i - 1] : pts.back();
        auto nxt = i + 1 < pts.size() ? pts[i + 1] : pts.front();
        double ang = pts[i].ang(prv, nxt);
        ans[inx[pts[i]]] = (M_PI - ang) / (2 * M_PI);
    }

    for (auto& d : ans) {
        printf("%.9f\n", d);
    }

    return 0;
}



Measured memory_bytes: 256