using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _09.TheatrePromotion
{
    class Program
    {
        static void Main(string[] args)
        {
            var day = Console.ReadLine().ToLower();
            var age = int.Parse(Console.ReadLine());
            var price = 0;
            if (age < 0)
            {
                Console.WriteLine("Error!");
                return;
            }

            if (day=="weekday")
            {
                if (0 <= age && age <= 18|| 64 < age&&age <= 122)
                {
                    price = 12;
                }
                else if (18 < age&&age <= 64)
                {
                    price = 18;
                }

            }
            else if (day =="weekend")
            {
                if (0 <= age && age <= 18 || 64 < age && age <= 122)
                {
                    price = 15;
                }
                else if (18 < age && age <= 64)
                {
                    price = 20;
                }
            }
            else if (day == "holiday")
            {
                if (0 <= age && age <= 18 )
                {
                    price = 5;
                }
                else if (18 < age && age <= 64)
                {
                    price = 10;
                }
                else if (64 < age && age <= 122)
                {
                    price = 10;
                }
            }
            if (price>0)
            {
                Console.WriteLine(price+"$");
            }
            else
            {
                Console.WriteLine("Error!");
            }
        }
    }
}