Party Profit

<?php

$companions = intval(readline());
$days = intval(readline());

$coins = 0;

for ($i = 1; $i <= $days; $i++) {
    if ($i % 10 === 0) {
        $companions -= 2;
    }
    if ($i % 15 === 0) {
        $companions += 5;
    }
    if ($i % 3 === 0) {
        $coins -= $companions * 3;
    }
    if ($i % 5 === 0) {
        $coins += $companions * 20;
        if ($i % 3 === 0) {
            $coins -= $companions * 2;
        }
    }
    $coins += 50;
    $coins -= $companions * 2;
}
$coinsPerCompanion = floor($coins / $companions);

echo "$companions companions received $coinsPerCompanion coins each.";