import java.io.*;
import java.util.*;
 
 
public class Main implements Runnable {
 
  public void run() {
    BetterScanner scanner = new BetterScanner(System.in);

    int n = scanner.nextInt();
    int[] xx = new int[n];
    int[] yy = new int[n];

    // 最も上 (y 座標が小さい) にある点のインデックスを求める
    // y 座標が最小の点が複数ある場合はその中の最も左のものにしておく
    int a = 0;
    int minY = 10000000;
    int minX = 10000000;
    for (int i = 0 ; i < n ; i ++) {
      int x = scanner.nextInt();
      int y = scanner.nextInt();
      xx[i] = x;
      yy[i] = y;
      if (y < minY || (y == minY && x < minX)) {
        minY = y;
        minX = x;
        a = i;
      }
    }
    List<Integer> outers = new ArrayList(n);
    int b;
    do {
      outers.add(a);
      b = 0;
      for (int c = 1 ; c < n ; c ++) {
        if (b == a) {
          b = c;
        } else {
          long v = (long)(xx[a] - xx[b]) * (yy[a] - yy[c]) - (long)(xx[a] - xx[c]) * (yy[a] - yy[b]);
          long ab = (long)(xx[a] - xx[b]) * (xx[a] - xx[b]) + (long)(yy[a] - yy[b]) * (yy[a] - yy[b]);
          long ac = (long)(xx[a] - xx[c]) * (xx[a] - xx[c]) + (long)(yy[a] - yy[c]) * (yy[a] - yy[c]);
          if (v > 0L || (v == 0L && ac > ab)) {
            b = c;
          }
        }
      }
      a = b;
    } while (a != outers.get(0)); 

    int m = outers.size();
    double[] props = new double[n];
    for (int k = 0 ; k < m ; k ++) {
      int i = outers.get(k);
      int nextI = (k < m - 1) ? outers.get(k + 1) : outers.get(0);
      int previousI = (k >= 1) ? outers.get(k - 1) : outers.get(m - 1);
      // 凸包上で隣り合う点との垂直二等分線の角度を計算
      double nextTan = Math.atan2(yy[nextI] - yy[i], xx[nextI] - xx[i]) + Math.PI / 2;
      double previousTan = Math.atan2(yy[i] - yy[previousI], xx[i] - xx[previousI]) + Math.PI / 2;
      if (nextTan > Math.PI) {
        nextTan -= 2 * Math.PI;
      }
      if (previousTan > Math.PI) {
        previousTan -= 2 * Math.PI;
      }
      double range = previousTan - nextTan;
      if (range < 0) {
        range += 2 * Math.PI;
      }
      // 隣り合う点との垂直二等分線の角度の差を 2π でわったものが確率
      props[i] = range / (2 * Math.PI);
    }
    for (int i = 0 ; i < n ; i ++) {
      System.out.println(props[i]);
    }
  }
 
  public static void main(String[] args) {
    Main main = new Main();
    main.run();
  }
 
  // scanner slightly faster than usual ones
  public static class BetterScanner {
 
    private InputStream stream;
    private byte[] buffer = new byte[1024];
    private int pointer = 0;
    private int bufferLength = 0;
 
    public BetterScanner(InputStream stream) {
      this.stream = stream;
    }
 
    private boolean updateBuffer() {
      if (pointer >= bufferLength) {
        pointer = 0;
        try {
          bufferLength = stream.read(buffer);
        } catch (IOException exception) {
          exception.printStackTrace();
        }
        return bufferLength > 0;
      } else {
        return true;
      }
    }
 
    private int read() {
      if (updateBuffer()) {
        return buffer[pointer ++];
      } else {
        return -1;
      }
    }
 
    public boolean hasNext() {
      skipUnprintable();
      return updateBuffer();
    }
 
    private void skipUnprintable() { 
      while (updateBuffer() && !isPrintableChar(buffer[pointer])) {
        pointer ++;
      }
    }
 
    public String next() {
      if (hasNext()) {
        StringBuilder builder = new StringBuilder();
        int codePoint = read();
        while (isPrintableChar(codePoint)) {
          builder.appendCodePoint(codePoint);
          codePoint = read();
        }
        return builder.toString();
      } else {
        throw new NoSuchElementException();
      }
    }
 
    public long nextLong() {
      if (hasNext()) {
        long number = 0;
        boolean minus = false;
        int codePoint = read();
        if (codePoint == '-') {
          minus = true;
          codePoint = read();
        }
        if (codePoint >= '0' && codePoint <= '9') {
          while (true) {
            if (codePoint >= '0' && codePoint <= '9') {
              number *= 10;
              number += codePoint - '0';
            } else if (codePoint < 0 || !isPrintableChar(codePoint)) {
              return (minus) ? -number : number;
            } else {
              throw new NumberFormatException();
            }
            codePoint = read();
          }
        } else {
          throw new NumberFormatException();
        }
      } else {
        throw new NoSuchElementException();
      }
    }
 
    public int nextInt() {
      long number = nextLong();
      if (number >= Integer.MIN_VALUE && number <= Integer.MAX_VALUE) {
        return (int)number;
      } else {
        throw new NumberFormatException();
      }
    }
 
    private boolean isPrintableChar(int codePoint) {
      return codePoint >= 33 && codePoint <= 126;
    }
 
  }
 
}

Measured memory_bytes: 22612