#!/bin/python3

import math

import os

import random

import re

import sys

#

# Complete the 'plusMinus' function below.

#

# The function accepts INTEGER_ARRAY arr as parameter.

#

def plusMinus(arr):

# Write your code here

size_of_arr = len(arr)

zero_numbers = 0

pos_numbers = 0

neg_numbers = 0

if size_of_arr == 0:

return

for x in arr:

if x == 0:

zero_numbers += 1

elif x > 0:

pos_numbers += 1

else: # x<0

neg_numbers += 1

pos_ratios = pos_numbers/size_of_arr

neg_ratios = neg_numbers/size_of_arr

zero_ratios = zero_numbers/size_of_arr

print("{:.6f}".format(pos_ratios))

print("{:.6f}".format(neg_ratios))

print("{:.6f}".format(zero_ratios))

return None

if __name__ == '__main__':

n = int(input().strip())

arr = list(map(int, input().rstrip().split()))

plusMinus(arr)