using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Pages of book:");

        int BookPages = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Camping Days:");

        int CampDays = Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Pages per day:");

        int PagesPerDay = Convert.ToInt32(Console.ReadLine());

        int Months = BookPages / (PagesPerDay * (30 - CampDays));

        double Years = Months / 12;

        double MonthsLeft = Months % 12;

        if (Years > 100 ) {

            Console.WriteLine("never");

        }

        else {

                Console.WriteLine(Years + " years and " + MonthsLeft + " months" );

        }

    }

}