import java.util.Scanner;

class EB
{
int consumerno;
String consumername;
int prev_month_reading;
int curr_month_reading;
int type_EB_connection;
int usage;
double billamount=0;
void display()
{
        System.out.println("Consumer No"+" "+consumerno);
        System.out.println("Consumer Name"+" "+consumername);
        System.out.println("EB usage"+" "+usage);
        System.out.println("Amount to be paid"+" "+billamount);

}
}
public class EBBill {


    public static void main(String[] args) {

        EB e=new EB();
        Scanner s=new Scanner(System.in);
        System.out.println("Enter the consumer number");
        e.consumerno=s.nextInt();
        System.out.println("Enter the consumer name");
        e.consumername=s.next();
        System.out.println("Enter the previous month reading in units");
        e.prev_month_reading=s.nextInt();
        System.out.println("Enter the current month reading in units");
        e.curr_month_reading=s.nextInt();
        System.out.println("Enter the type of EB Connection press 1 or 2.... 1.domestic  2.commercial");
        e.type_EB_connection=s.nextInt();
        e.usage =e.curr_month_reading-e.prev_month_reading;
        e.billamount=0;
        switch(e.type_EB_connection)
        {
            case 1:
                if(e.usage<=100)
                {
                    e.billamount=e.usage*1;
                    e.display();
                }
                else if(e.usage>100 & e.usage<=200)
                {
                    e.billamount=e.usage*2.50;
                    e.display();
                }
                else if(e.usage>200 & e.usage<=500)
                {
                    e.billamount=e.usage*4;
                    e.display();
                }
                else
                {
                    e.billamount=e.usage*6;
                    e.display();
                }
                break;
            case 2:
                if(e.usage<=100)
                {
                    e.billamount=e.usage*2;
                    e.display();
                }
                else if(e.usage>100 & e.usage<=200)
                {
                    e.billamount=e.usage*4.50;
                    e.display();
                }
                else if(e.usage>200 & e.usage<=500)
                {
                    e.billamount=e.usage*6;
                    e.display();
                }
                else
                {
                    e.billamount=e.usage*7;
                    e.display();
                }
                break;
            default:
                System.out.println("Type of Connection is in valid.");
                System.out.println("Enter the type of EB Connection press 1 or 2.... 1.domestic  2.commercial");
        }


    }

}