3. Aluminium Joinery

<?php

$joineryCount = readline();
$joineryType = readline();
$delivery = readline();

        $price = 0;

        if ($joineryCount < 10) {
            echo("Invalid order");
            return;
        }

        if ($joineryType=="90X130") {
            $price = 110;
            $price *= $joineryCount;
            if ($joineryCount > 60) {
                $price *= 0.92;
            } elseif ($joineryCount > 30) {
                $price *= 0.95;
            }
        } elseif ($joineryType=="100X150") {
            $price = 140;
            $price *= $joineryCount;
            if ($joineryCount > 80) {
                $price *= 0.90;
            } elseif ($joineryCount > 40) {
                $price *= 0.94;
            }
        } elseif ($joineryType=="130X180") {
            $price = 190;
            $price *= $joineryCount;
            if ($joineryCount > 50) {
                $price *= 0.88;
            } elseif ($joineryCount > 20) {
                $price *= 0.93;
            }
        } elseif ($joineryType=="200X300") {
            $price = 250;
            $price *= $joineryCount;
            if ($joineryCount > 50) {
                $price *= 0.86;
            } elseif ($joineryCount > 25) {
                $price *= 0.91;
            }
        }

        if ($delivery=="With delivery") {
            $price += 60;
        }

        if ($joineryCount >= 100) {
            $price *= 0.96;
        }
        printf("%.2f BGN", $price);