import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;

import java.util.function.IntConsumer;
import java.util.stream.IntStream;

public class Solution {

    // Complete the plusMinus function below.
    static void plusMinus(int[] arr) {
        IntStream.of(arr).collect(DangStatisTic::new, DangStatisTic::accept, (a, b) -> {
        throw new UnsupportedOperationException();
        }).print();

    }

    private static final Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {
        int n = scanner.nextInt();
        scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

        int[] arr = new int[n];

        String[] arrItems = scanner.nextLine().split(" ");
        scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

        for (int i = 0; i < n; i++) {
            int arrItem = Integer.parseInt(arrItems[i]);
            arr[i] = arrItem;
        }

        plusMinus(arr);

        scanner.close();
    }
}
class DangStatisTic implements IntConsumer {

  int biggerThan0;

  int lessThan0;

  int is0;

  int size;

  public DangStatisTic() {}

  public void print() {
    System.out.println(String.format("%.6f", (float) biggerThan0 / ((float) size)));
    System.out.println(String.format("%.6f", (float) lessThan0 / ((float) size)));
    System.out.println(String.format("%.6f", (float) is0 / ((float) size)));

  }

  @Override
  public void accept(int value) {
    if (value > 0) biggerThan0++;
    if (value < 0) lessThan0++;
    if (value == 0) is0++;
    size++;
  }
}