using System;
using System.Linq;
using System.Collections.Generic;

namespace test20190423
{
    class Program
    {
        static void Main(string[] args)
        {
            DateTime baseDay = new DateTime(2015, 1, 1);
            Func<string, int, int, int> cal = (s, n1, n2) => int.Parse(s.Substring(n1, n2));
            List<string> ss = new List<string>();
            for (int i = 0; i < 365; i++)
            {
                var s = (baseDay + new TimeSpan(i, 0, 0, 0)).ToString();
                if (cal(s, 5, 2) == cal(s, 8, 1) + cal(s, 9, 1))
                {
                    ss.Add(s);
                    //Console.WriteLine(s);
                }

            }
            Console.WriteLine(ss.Count);
            //Console.ReadLine();
        }
    }
}