using System;

public class Program

{

    public static void Main()

    {

        double ht;

        double pph;

        double tp;

        double pd;

        double pt;

        double pe;

        double he=0;

        Console.Write("Ingrese horas de trabajo:");

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

        Console.Write("Ingrese precio por hora:");

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

        if (ht<=40) {

            tp=ht*pph;

        }

        else  {

            he=ht-40;

            }

             if  (he<=8) {

                    pe=he*pph*2;    

        }

        else {

            pd=8*pph*2;

            pt=(he-8)*pph*3;

            pe=pd+pt;

        }

        tp=40*pph+pe;

        Console.WriteLine("Su pago es:"+tp);

    }

}