using System;
public class Program
{
    public static void Main()
    {
        int happyDay = 0; //カウント

        for (int i = 0; i < 365; i++)
        {
            DateTime addDay = new DateTime(2015, 1, 1).AddDays(i);

            if (addDay.Month == addDay.Day) //月と日が同じ
            {
                happyDay++;
                //Console.WriteLine(addDay.ToString());

                continue;
            }
            else if (addDay.Day >= 10) //day10以上
            {
                //十の位
                int ten = addDay.Day / 10;
                //一の位
                int one = addDay.Day % (ten * 10);

                int num = ten + one;
                if (addDay.Month == num)
                {
                    happyDay++;
                    //Console.WriteLine(addDay.ToString());

                    continue;
                }
            }
        }
        Console.WriteLine("{0}", happyDay);
    }
}