// Program 51: Telephone Bill Using Inheritance

import java.util.*;

class Customer
{
    String name;
    int calls;

    void input()
    {
        Scanner sc = new Scanner(System.in);

        System.out.print("Customer name: ");
        name = sc.nextLine();

        System.out.print("Number of calls: ");
        calls = sc.nextInt();
    }
}

class TelephoneBill extends Customer
{
    void display()
    {
        // Assumed tariff: Rs. 200 rental includes 100 calls.
        // Each additional call costs Rs. 1.
        double bill = 200.0;

        if (calls > 100)
        {
            bill += (calls - 100) * 1.0;
        }

        System.out.println("Customer: " + name);
        System.out.println("Calls: " + calls);
        System.out.println("Bill amount: Rs. " + bill);
    }

    public static void main(String[] args)
    {
        TelephoneBill ob = new TelephoneBill();

        ob.input();
        ob.display();
    }
}