using System;
using System.Linq;

namespace No188_1{
    public class Program{
        public static void Main(string[] args){
            const int year = 2015;
            var date = new DateTime(year, 1, 1);
            var happyDays = 0;
            for(var i = 0; i < 365 + (DateTime.IsLeapYear(year) ? 1 : 0); i++){
                var d = date.AddDays(i);
                if(d.Month == d.Day.ToString().Sum(c => c - '0')) happyDays++;
            }
            Console.WriteLine(happyDays);
        }
    }
}