C# Basics Exam 25 July 2014 Evening - Electricity

import java.util.Scanner;

public class Electricity {
    private final static double LAMP_CONSUMPTION = 100.53;
    private final static double COMP_CONSUMPTION = 125.90;

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        int floors = input.nextInt();
        int flats = input.nextInt();
        input.nextLine();
        String time = input.nextLine();

        int allFlats = floors * flats;
        int lamps = 0;
        int computers = 0;

        //get first 2 digits
        String getHours = "";
        if(time.length() == 5) {
            getHours = time.substring(0, 2);
        }
        else {
            getHours = time.substring(0, 1);
        }
        int hours = Integer.parseInt(getHours);

        if (hours >= 14 && hours < 19) {
            lamps = 2;
            computers = 2;
        }
        else if (hours >= 19 && hours < 24) {
            lamps = 7;
            computers = 6;
        }
        else if (hours >= 0 && hours < 9) {
            lamps = 1;
            computers = 8;
        }

        System.out.printf("%d Watts", (int)((allFlats * lamps * LAMP_CONSUMPTION) + (allFlats * computers * COMP_CONSUMPTION)));
    }



}