using System;
class Program
{
    static void Main(string[] args)
    {
       int count = 0;

        for (DateTime dt = new DateTime(2015, 1, 1);  dt.Year == 2015;dt= dt.AddDays(1))
        {
            int x = dt.Month;
            int y = dt.Day / 10 + dt.Day % 10 ;

            if(x ==y)
            {
                count++;
            }
        }        

        System.Console.WriteLine(count);
    }
}