01.PiggyBank

using System;

class PiggyBank
{
    static void Main(string[] args)
    {
        int priceOfTank = int.Parse(Console.ReadLine());
        int  partyDays = int.Parse(Console.ReadLine());


        int notsaving = partyDays * 5;
        int saving = (30 - partyDays) * 2;
        int normalMonth =  (30 - partyDays) * 2  - notsaving;



        if (notsaving >= saving)

        {
            Console.WriteLine("never");
        }
        else
        {

            double  count = (double)priceOfTank / (double)normalMonth;
            count = Math.Ceiling(count);
            double years =  count / 12;
            double monts = count % 12;
            Console.WriteLine("{0} years, {1} months",Math.Floor(years),Math.Ceiling(monts));
        }

    }
}