using System;

public class Program

{

    public static void Main()

    {

        //declration

        double addf, totalf, discount, disfare;

        double dis1=.10;

        double dis2=.50;

        int SwitchChoice;

        double ptf;

        //input

        Console. Write("Enter kilometers traveled: ");

        double kmt=Convert.ToDouble(Console.ReadLine());

        Console.Write("Enter fare rate: ");

        double fr=Convert.ToDouble (Console.ReadLine()); 

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

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

        //process  

        switch (SwitchChoice)

        {

           case 1:

           Console.Write("\nYou are a Student");

           Console.ReadLine();

           Console.Write("\nStudent's discount: ");

           dis1=Convert.ToDouble(Console.ReadLine());

           if (kmt>=2)

            {

            ptf=kmt*fr;

            addf=(kmt-1)*.5;

            totalf=ptf+addf;

            discount=ptf*dis1;

            disfare=totalf-discount;

            Console.WriteLine("\nStudent's fare rate is: "+ disfare);

            Console.ReadLine();

            }

            else if (kmt<=1)

            {

            ptf=kmt*fr;

            discount=ptf*dis1;

            disfare=ptf-discount;

            Console.WriteLine("\nStudent's fare rate is: "+ disfare);

            Console.ReadLine();

            }

            break;

            case 2:

            Console.Write("\nYou are a Senior Citizen");

            Console.ReadLine();

            Console.Write("\nSenior Citizen's discount: ");

            dis1=Convert.ToDouble(Console.ReadLine());

            if (kmt>=2)

            {

            ptf=kmt*fr;

            addf=(kmt-1)*.5;

            totalf=ptf+addf;

            discount=ptf*dis2;

            disfare=totalf-discount;

            Console.WriteLine("\nSenior Citizen's fare rate is: "+ disfare);

            Console.ReadLine();

        }

            else if (kmt<=1)

            {

            ptf=kmt*fr;

            discount=ptf*dis2;

            disfare=ptf-discount;

            Console.WriteLine("\nSenior Citizen's fare rate is: "+ disfare);

            disfare=Convert.ToDouble(Console.ReadLine());

            }

            break;

            case 3:

            Console.Write("\nYou are a Regular");

            Console.ReadLine();

            if (kmt>=2)

            {

            ptf=kmt*fr;

            addf=(kmt-1)*.5;

            totalf=ptf+addf;

            discount=ptf*dis1;

            disfare=totalf-discount;

            Console.WriteLine("\nRegular fare rate is: "+ disfare);

            Console.ReadLine();

           } 

            else if (kmt<=1)

            {

            ptf=kmt*fr;

            discount=ptf*dis1;

            disfare=ptf-discount;

            //output

            Console.WriteLine("\nRegular's fare rate is: "+ disfare);

            disfare=Convert.ToDouble(Console.ReadLine());

            }

            break;

        Console.ReadLine(); 

       }

    }

}