using System;

class Program
{
    static void Main()
    {
        int Answer = 0;

        DateTime CurrDay = new DateTime(2015, 1, 1);
        for (; CurrDay.Year == 2015; CurrDay = CurrDay.AddDays(1)) {
            if (IsHappyDay(CurrDay)) {
                //Console.WriteLine("{0}はHappy Day", CurrDay.ToString(@"yyyy\/MM\/dd"));
                Answer++;
            }
        }
        Console.WriteLine(Answer);
    }

    static bool IsHappyDay(DateTime pTarget)
    {
        int wkMonth = pTarget.Month;
        int wkDay = pTarget.Day;
        return wkMonth == wkDay / 10 + wkDay % 10;
    }
}