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

        for (int i = 0; i < 365; i++)
        {
            DateTime addday = dateTime.AddDays(i);
            if (addday.Month <= addday.Day)
            {
                if (addday.Month == addday.Day) //月と日が同じ
                {
                    happyday++;
                    continue;
                }
                else if (addday.Day.ToString().Length == 2)
                {
                    string str = addday.Day.ToString();
                    int num = int.Parse(str[0].ToString()) + int.Parse(str[1].ToString());
                    if (addday.Month == num)
                    {
                        happyday++;
                        continue;
                    }
                }
            }
        }
        Console.WriteLine("{0}", happyday);
    }
}