import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Scanner;
import org.joda.time.DateTime;
public class ageInMonths
{
    public static void main(String[] args)
    {
        System.out.println("Please enter your birth month.");
        boolean isNumeric = false;
        //array order is: month, year
        int birth[] = new int[2];
        Scanner kb = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        while (!isNumeric)
        {
            try
            {
                birth[0] = kb.nextInt();
                if (birth[0] == 0)
                {
                    throw new Exception();
                }
                isNumeric = true;
            }
            catch (Exception e)
            {
                System.out.println("Please enter in an integer not zero.");
                kb.nextLine();
            }
        }
        isNumeric = false;
        System.out.println("Please enter your birth year.");
        while (!isNumeric)
        {
            try
            {
                birth[1] = kb.nextInt();
                isNumeric = true;
            }
            catch (Exception e)
            {
                System.out.println("Please enter in an integer.");
                kb.nextLine();
            }
        }
        int old[] = new int[2];
        DateTime dt = new DateTime();
        old[0] = dt.getMonthOfYear() - birth[0];
        old[1] = dt.getYear() - birth[1];
        old = conversion(old);
        System.out.println("You are " + (old[0] + old[1]*12) + " months old.");
    }
    static int[] conversion(int[] old)
    {
        if (old[0] < 0)
        {
            old[0] = old[0] + 12;
            --old[1];
        }
        if (old[0] > 11)
        {
            old[0] = old[0] - 12;
            ++old[1];
        }
        return conversion(old);
    }
}