03. Mobile operator

package examPrep;

import java.util.Scanner;

public class P03MobileOperator {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String yearContract = scanner.nextLine();
        String typeContract = scanner.nextLine();
        String mobileNet = scanner.nextLine();
        int months = Integer.parseInt(scanner.nextLine());

        double amount = 0;
        if (yearContract.equals("one")) {
            if (typeContract.equals("Small")) {
                amount = 9.98;
            } else if (typeContract.equals("Middle")) {
                amount = 18.99;
            } else if (typeContract.equals("Large")) {
                amount = 25.98;
            } else if (typeContract.equals("ExtraLarge")) {
                amount = 35.99;
            }
        } else if (yearContract.equals("two")) {
            if (typeContract.equals("Small")) {
                amount = 8.58;
            } else if (typeContract.equals("Middle")) {
                amount = 17.09;
            } else if (typeContract.equals("Large")) {
                amount = 23.59;
            } else if (typeContract.equals("ExtraLarge")) {
                amount = 31.79;
            }
        }

        if (mobileNet.equals("yes")) {
            if (amount <= 10) {
                amount = amount + 5.50;
            } else if (amount <= 30) {
                amount = amount + 4.35;
            } else {
                amount = amount + 3.85;
            }
        }

        double totalSum = amount * months;

        if (yearContract.equals("two")) {
            totalSum = totalSum - (totalSum * 0.0375);
        }

        System.out.printf("%.2f lv.%n", totalSum);
    }
}