Малък проблем със задача Feed the Animals от демо изпита

Здравейте колеги, от PHP групата съм и решавам въпросната задача и judge отпуска само 40 точки. Така и не успях да си намеря грешката та бих се радвал на малко помощ!

<?php

$animals = [];
$area = [];

$input = readline();

while ($input !== 'Last Info') {


    $args = explode(":", $input);
    $action = $args[0];
    $animalName = $args[1];
    $areaName = $args[3];

    if ($action == 'Add') {
        $dailyFoodLimit = intval($args[2]);

        if (!key_exists($animalName, $animals)) {
            $animals[$animalName] = intval($dailyFoodLimit);
            if (!key_exists($animalName, $area)) {
                $area[$areaName] = 1;
            } else
                $area[$areaName] += 1;

        } else {
            $animals[$animalName] += intval($dailyFoodLimit);
        }


    } else if ($action == 'Feed') {
        $givenFood = intval($args[2]);

        if (key_exists($animalName, $animals)) {
            $animals[$animalName] -= intval($givenFood);
            if ($animals[$animalName] <= 0) {
                echo "$animalName was successfully fed" . PHP_EOL;
                //unset($animals[$animalName]);
                $area[$areaName] -= 1;

            }
        }
    }

    $input = readline();
}


//sort animals
krsort($animals);
arsort($animals);


//output
echo 'Animals:' . PHP_EOL;
foreach ($animals as $hungryAnimal => $foodToGive) {
    if ($foodToGive > 0) {
        echo $hungryAnimal . " -> " . $foodToGive . 'g' . PHP_EOL;
    }
}

//sort areas
arsort($area);
echo 'Areas with hungry animals:' . PHP_EOL;

foreach ($area as $anArea => $count) {
    if ($count > 0) {
        echo $anArea . " : " . $count . PHP_EOL;
    }
}

<?php $animals = []; $area = []; $input = readline(); while ($input !== 'Last Info') { $args = explode(":", $input); $action = $args[0]; $animalName = $args[1]; $givenFood = intval($args[2]); $areaName = $args[3]; if ($action == 'Add') { if (!key_exists($animalName, $animals)) { $animals[$animalName] = 0; if (!key_exists($areaName, $area)) { $area[$areaName] = 0; } $area[$areaName] += 1; } $animals[$animalName] += $givenFood; } else if ($action == 'Feed') { if (key_exists($animalName, $animals)) { $animals[$animalName] -= intval($givenFood); if ($animals[$animalName] <= 0) { echo "$animalName was successfully fed" . PHP_EOL; unset($animals[$animalName]); $area[$areaName] -= 1; } } } $input = readline(); } //sort animals ksort($animals); arsort($animals); //output echo 'Animals:' . PHP_EOL; foreach ($animals as $hungryAnimal => $foodToGive) { if ($foodToGive > 0) { echo $hungryAnimal . " -> " . $foodToGive . 'g' . PHP_EOL; } } //sort areas arsort($area); echo 'Areas with hungry animals:' . PHP_EOL; foreach ($area as $anArea => $count) { if ($count > 0) { echo $anArea . " : " . $count . PHP_EOL; } }