TaxCalculator

package com;


import java.util.Scanner;

public class TaxCalculator
{
  public static void main(String[] args)
  {
    final int BASE_TAX = 20000;
    Scanner scanner = new Scanner(System.in);
    int yearlySalary = scanner.nextInt();
    double taxPerSalary;
    if (yearlySalary <= BASE_TAX) {
      taxPerSalary = 0;
    }
    else if (yearlySalary > BASE_TAX && yearlySalary <= BASE_TAX * 2) {
      taxPerSalary = (yearlySalary - BASE_TAX) * 0.1;

    }
    else if (yearlySalary > BASE_TAX * 2 && yearlySalary <= BASE_TAX * 3) {
      taxPerSalary = BASE_TAX * 0.1 + (yearlySalary - BASE_TAX * 2) * 0.2;

    }
    else {
      taxPerSalary = BASE_TAX * 0.1 + BASE_TAX * 0.2 + (yearlySalary - BASE_TAX * 3) * 0.3;

    }
    System.out.println(taxPerSalary);


  }
}