<?php

$price_CPU = 85;
$price_ROM = 45;
$price_RAM = 35;
$price_VIA = 45;

$input = $_GET['list'];

$array = explode(", ", $input);

$parts = [
	'CPU' => 0,
	'RAM' => 0,
	'ROM' => 0,
	'VIA' => 0
];

foreach($array as $part)
{
	$parts[$part]++;
}

$total_cost = 0;

if($parts['CPU'] >= 5)
{
	$total_cost += $price_CPU * $parts['CPU'] / 2;
}
else
{
	$total_cost += $price_CPU * $parts['CPU'];
}

if($parts['ROM'] >= 5)
{
	$total_cost += $price_ROM * $parts['ROM'] / 2;
}
else
{
	$total_cost += $price_ROM * $parts['ROM'];
}

if($parts['RAM'] >= 5)
{
	$total_cost += $price_RAM * $parts['RAM'] / 2;
}
else
{
	$total_cost += $price_RAM * $parts['RAM'];
}

if($parts['VIA'] >= 5)
{
	$total_cost += $price_VIA * $parts['VIA'] / 2;
}
else
{
	$total_cost += $price_VIA * $parts['VIA'];
}

$assembled = min(array_values($parts));
$assembled_winnings = $assembled * 420;

$parts_left = [
	'CPU' => $parts['CPU'] - $assembled,
	'RAM' => $parts['RAM'] - $assembled,
	'ROM' => $parts['ROM'] - $assembled,
	'VIA' => $parts['VIA'] - $assembled
];

$parts_left_sum = array_sum($parts_left);

$sold = 0;
$sold += $parts_left['CPU'] * $price_CPU / 2;
$sold += $parts_left['RAM'] * $price_RAM / 2;
$sold += $parts_left['ROM'] * $price_ROM / 2;
$sold += $parts_left['VIA'] * $price_VIA / 2;

$earnings = $assembled_winnings + $sold;
$total = $earnings - $total_cost;

$html = "<ul>";
$html .= "<li>$assembled computers assembled</li>";
$html .= "<li>$parts_left_sum parts left</li>";
$html .= "</ul>";
if($total <= 0){
	$html .= "<p>Nakov lost $total leva</p>";
} else {
	$html .= "<p>Nakov gained $total leva</p>";
}

echo $html;