using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TestConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            var targetdate = new DateTime(2015, 1, 1);
            int count = 0;
            for (;;)
            {
                if (targetdate.Year == 2016)
                {
                    break;
                }
                if (targetdate.Month == targetdate.Day % 10 + targetdate.Day / 10)
                {
                    count++;
                }
                targetdate = targetdate.AddDays(1);
            }
            Console.WriteLine(count);
        }
    }
}