using System;
public class Program
{
    public static void Main()
    {
        DateTime dateTime = new DateTime(2015,1,1);
        int happyday = 0;

        for (int i = 1;i < 365;i++)
        {
            DateTime addday = dateTime.AddDays(i);
            if (addday.Day >= 10 && int.Parse(addday.Day.ToString().Substring(0, 1)) + int.Parse(addday.Day.ToString().Substring(1, 1)) == addday.Month)
            {
                    happyday++;
            }
            else if(addday.Day == addday.Month && addday.Day <= 9)
            {
                happyday++;
            }
        }
        Console.WriteLine("{0}", happyday);

    }
}