<?php

class Human
{
    /**
     * @var string
     */
    private $firstName;
    /**
     * @var string
     */
    private $lastName;

    /**
     * Human constructor.
     * @param string $firstName
     * @param string $lastName
     * @throws Exception
     */
    public function __construct(string $firstName, string $lastName)
    {
        $this->setFirstName($firstName);
        $this->setLastName($lastName);
    }

    /**
     * @return string
     */
    public function getFirstName(): string
    {
        return $this->firstName;
    }

    /**
     * @param string $firstName
     * @throws Exception
     */
    private function setFirstName(string $firstName): void
    {
        if ($this->validCapital($firstName)) {
            throw new Exception("Expected upper case letter!Argument: firstName\n");
        }
        if (strlen($firstName) < 4) {
            throw new Exception("Expected length at least 4 symbols!Argument: firstName\n");
        }
        $this->firstName = $firstName;
    }

    /**
     * @return string
     */
    public function getLastName(): string
    {
        return $this->lastName;
    }

    /**
     * @param string $lastName
     * @throws Exception
     */
    private function setLastName(string $lastName): void
    {
        if ($this->validCapital($lastName)) {
            throw new Exception("Expected upper case letter!Argument: lastName\n");
        }
        if (strlen($lastName) < 3) {
            throw new Exception("Expected length at least 3 symbols!Argument: lastName\n");
        }
        $this->lastName = $lastName;
    }

    /**
     * @param string $lastFirst
     * @return bool
     */
    public function validCapital(string $lastFirst): bool
    {
        return ctype_lower($lastFirst[0]);
    }
}

class Student extends Human
{
    /**
     * @var string
     */
    private $faculty;

    /**
     * Student constructor.
     * @param string $firstName
     * @param string $lastName
     * @param int $faculty
     * @throws Exception
     */
    public function __construct(string $firstName, string $lastName, string $faculty)
    {
        parent::__construct($firstName, $lastName);
        $this->setFaculty($faculty);
    }

    /**
     * @return int
     */
    public function getFaculty(): string
    {
        return $this->faculty;
    }

    /**
     * @param int $faculty
     * @throws Exception
     */
    public function setFaculty(string $faculty): void
    {
        if ($this->isNumber($faculty)) {
            throw new Exception("Invalid faculty number!\n");
        }
        $this->faculty = $faculty;
    }

    /**
     * @param $faculty
     * @return bool
     */
    public function isNumber($faculty): bool
    {
      return strlen($faculty) < 5 || strlen($faculty) > 10;

    }

    /**
     * @return string
     */
    public function __toString()
    {
        return "First Name: {$this->getFirstName()}\nLast Name: {$this->getLastName()}\nFaculty number: {$this->getFaculty()}\n\n";
    }
}

class Worker extends Human
{
    /**
     * @var float
     */
    private $weekSalary;
    /**
     * @var float
     */
    private $workHoursDay;

    /**
     * Worker constructor.
     * @param string $firstName
     * @param string $lastName
     * @param float $weekSalary
     * @param float $workHoursDay
     * @throws Exception
     */
    public function __construct(string $firstName, string $lastName, float $weekSalary, float $workHoursDay)
    {
        parent::__construct($firstName, $lastName);
        $this->setWeekSalary($weekSalary);
        $this->setWorkHoursDay($workHoursDay);
    }

    /**
     * @return float
     */
    public function getWeekSalary(): float
    {
        return $this->weekSalary;
    }

    /**
     * @param float $weekSalary
     * @throws Exception
     */
    public function setWeekSalary(float $weekSalary): void
    {
        if ($weekSalary < 10) {
            throw new Exception("Expected value mismatch!Argument: weekSalary\n");
        }
        $this->weekSalary = $weekSalary;
    }

    /**
     * @return float
     */
    public function getWorkHoursDay(): float
    {
        return $this->workHoursDay;
    }

    /**
     * @param float $workHoursDay
     * @throws Exception
     */
    public function setWorkHoursDay(float $workHoursDay): void
    {
        if ($workHoursDay < 1 || $workHoursDay > 12) {
            throw new Exception("Expected value mismatch!Argument: workHoursPerDay\n");
        }
        $this->workHoursDay = $workHoursDay;
    }

    /**
     * @return float
     */
    public function calculateSalary(): float
    {
        return $this->weekSalary / ($this->workHoursDay * 7);
    }

    public function __toString()
    {
        return "First Name: {$this->getFirstName()}\nLast Name: {$this->getLastName()}\nWeek Salary: " . number_format($this->weekSalary, 2, ".", "") . "\nHours per day: " . number_format($this->getWorkHoursDay(), 2, ".", "") . "\nSalary per hour: " . number_format($this->calculateSalary(), 2, ".", "") . "\n";
    }
}

$students = [];
$workers = [];
try {
    $student = explode(" ", readline());
    $firstName = $student[0];
    $lastName = $student[1];
    $faculty = $student[2];
    $students[] = new Student($firstName, $lastName, $faculty);
    foreach ($students as $item) {
        echo $item;
    }
    $worker = explode(" ", readline());
    $firstName = $worker[0];
    $lastName = $worker[1];
    $weekSalary = floatval($worker[2]);
    $hoursPerDay = floatval($worker[3]);
    $workers[] = new Worker($firstName, $lastName, $weekSalary, $hoursPerDay);
    foreach ($workers as $items) {
        echo $items;
    }
} catch (Exception $e) {
    echo $e->getMessage();
}