using System;

class Program
{
    static void Main()
    {
        int floors = int.Parse(Console.ReadLine());
        int flats = int.Parse(Console.ReadLine());
        DateTime now = DateTime.Parse(Console.ReadLine());
        double wats = 0;

        if (now > (DateTime.Parse("14:00")) && (now < (DateTime.Parse("18:59"))))
        {
            wats += (floors * flats) * ((2 * 100.53) + (2 * 125.90));
        }

        else if (now > (DateTime.Parse("19:00")) && (now < (DateTime.Parse("23:59"))))
        {
            wats += (floors * flats) * ((7 * 100.53) + (6 * 125.90));
        }

        else if (now > (DateTime.Parse("00:00")) && (now < (DateTime.Parse("08:59"))))
        {
            wats += (floors * flats) * ((1 * 100.53) + (8 * 125.90));
        }

        else
        {
            wats += 0;
        }
        Console.WriteLine("{0} Watts", (int)wats);
    }
}