using System;

public class Program

{

    public static void Main()

    {

        double cost , kast , half_c;

        Console.WriteLine("enter the cost");

        cost=double.Parse(Console.ReadLine());

        half_c= cost/2;

        kast=half_c/5;

        Console.WriteLine("the half_c is:{0} and the kast is {1}",half_c,kast); 

    }

}