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);

            int ten = 0;
            int one = 0;
            if(addDay.Day < 10)
            {
                one = addDay.Day;
            }
            else
            {
                ten = addDay.Day / 10;
                one = addDay.Day % (ten * 10);
            }
                int num = ten + one;
                if (addDay.Month == num)
                {
                    happyDay++;
                    continue;
                }
        }
        Console.WriteLine("{0}", happyDay);
    }
}