using System;

public class Program

{

    public static void Main()

    {

        double pc , fee , total= 0.0 ;

        Console.Write("Enter your parcel: ");

        pc = float.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

            fee = 0.3;

        total = pc * fee ;

        Console.Write("parcel: {0} grams = {1}x{2} = {3} Bath",pc,pc,fee,total ); 

        //{index} ไล่ตัวแปรไปเรื่อยๆ {0} {1} {2} {3}

    }

}