code20

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;

class Result {

    public static void plusMinus(List<Integer> arr) {
        int a=0,b=0,c=0;
    for(int i=0;i<arr.size();i++)
    {
        if(arr.get(i)>0)
        {
            a++;
        }
        else if(arr.get(i)<0)
        {
            b++;
        }
        else {
            c++;
        }
        }
         double d=(double)a/arr.size();
        double e=(double)b/arr.size();
        double f=(double)c/arr.size();
        System.out.format("%.6f%n", d); 
 System.out.format("%.6f%n", e); 
  System.out.format("%.6f%n", f);    
    }
    }
public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

        int n = Integer.parseInt(bufferedReader.readLine().trim());

        List<Integer> arr = Stream.of(bufferedReader.readLine().replaceAll("\\s+$", "").split(" "))
            .map(Integer::parseInt)
            .collect(toList());

        Result.plusMinus(arr);

        bufferedReader.close();
    }
}