<?php

/*
 * Complete the 'plusMinus' function below.
 *
 * The function accepts INTEGER_ARRAY arr as parameter.
 */

function plusMinus($arr) {
    $positivi = 0;
    $negativi = 0;
    $base0 = 0;
    $dimensione = count($arr);
    
    foreach($arr as $item){
        switch(true){
            case $item > 0:
            $positivi++;
            break;
            case $item === 0:
            $base0++;
            break;
            case $item < 0:
            $negativi++;
            break;
        }
    }

    echo sprintf("%.6f", $positivi / $dimensione) . "\n";
    echo sprintf("%.6f", $negativi / $dimensione) . "\n";
    echo sprintf("%.6f", $base0 / $dimensione) . "\n";

}

$n = intval(trim(fgets(STDIN)));

$arr_temp = rtrim(fgets(STDIN));

$arr = array_map('intval', preg_split('/ /', $arr_temp, -1, PREG_SPLIT_NO_EMPTY));

plusMinus($arr);