using System;

public class Program

{

    public static void Main()

    {

      float pc , fee ;

      Console.Write("Eter your parcel");

      pc = int.Parse(Console.ReadLine());

        if ( pc >=1 && pc <=300)

               fee = 0.1 ;

      else if ( pc >= 301 && pc <=500)

               fee = 0.15 ;

      else if ( pc >= 501 && pc <=1000)

               fee = 0.2 ;

      else if ( pc >= 1001 && pc <=2000)

               fee = 0.25 ;

      else if ( pc >= 2000 )

               fee = 3 ;

    }

}