8. Trade Commitions

import java.util.Scanner;

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

        String town = scanner.nextLine();
        double sales = Double.parseDouble(scanner.nextLine());
        double comission = 0.0;

        if (town.equalsIgnoreCase("sofia")|| town.equalsIgnoreCase("varna")|| town.equalsIgnoreCase("plovdiv")) {

            if (town.equalsIgnoreCase("sofia")) {
                if (sales >= 0 && sales <= 500) comission = 0.05;
                else if (sales > 500 && sales <= 1000) comission = 0.07;
                else if (sales > 1000 && sales <= 10_000) comission = 0.08;
                else if (sales > 10_000) comission = 0.12;
                double result = sales * comission;
                if (result <= 0){
                    System.out.println("error");
                }
                else {
                    System.out.printf("%.2f",result);
                }
            } else if (town.equalsIgnoreCase("varna")) {
                if (sales >= 0 && sales <= 500) comission = 0.045;
                else if (sales > 500 && sales <= 1000) comission = 0.075;
                else if (sales > 1000 && sales <= 10_000) comission = 0.1;
                else if (sales > 10_000) comission = 0.13;
                double result = sales * comission;
                if (result <= 0){
                    System.out.println("error");
                }
                else {
                    System.out.printf("%.2f",result);
                }
            } else if (town.equalsIgnoreCase("plovdiv")) {
                if (sales >= 0 && sales <= 500) comission = 0.055;
                else if (sales > 500 && sales <= 1000) comission = 0.08;
                else if (sales > 1000 && sales <= 10_000) comission = 0.12;
                else if (sales > 10_000) comission = 0.145;
                double result = sales * comission;
                if (result <= 0){
                    System.out.println("error");
                }
                else {
                    System.out.printf("%.2f",result);
                }
            }
        }
        else System.out.println("error");

    }

}