using System;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        var happyDay = 0;
        var baseDay = new DateTime(2015, 1, 1);

        foreach (var i in Enumerable.Range(0, 365))
        {
            var checkDay = baseDay.AddDays(i);
            var numberHigh = checkDay.Day / 10;
            var numberLow = checkDay.Day - numberHigh * 10;
            if (checkDay.Month == (numberHigh + numberLow))
            {
                happyDay++;
            }
        }

        Console.WriteLine(happyDay.ToString());
    }
}