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

namespace HapyHapyday
{
	class Program
	{
		static void Main(string[] args)
		{
			Program program = new Program();					

			int hapyhapyday = 0;

			for(int month=1;month<=12;month++)
			{
				if(month < 8)
				{
					//31日
					if(month % 2 == 1)
					{
						for (int day = 1; day <= 31; day++) program.HapyCount(ref hapyhapyday, month, day);						
					}
					//30もしくは28
					else
					{
						if(month == 2)
						{
							for (int day = 1; day <= 28; day++) program.HapyCount(ref hapyhapyday, month, day);
						}

						else
						{
							for (int day = 1; day <= 30; day++) program.HapyCount(ref hapyhapyday, month, day);
						}

					}
				}
				else
				{
					if(month % 2 == 1)
					{
						for (int day = 1; day <= 30; day++) program.HapyCount(ref hapyhapyday, month, day);
					}
					else
					{
						for (int day = 1; day <= 31; day++) program.HapyCount(ref hapyhapyday, month, day);
					}
				}


			}
			Console.WriteLine(hapyhapyday);			
		}

		public void HapyCount(ref int hapyhapyday,int month,int day)
		{
			if (day.ToString().Length == 1)
			{
				if (month == day) hapyhapyday++;
			}
			else
			{
				int dayParts1 = Convert.ToInt32(day.ToString().Substring(0,1));
				int dayParts2 = Convert.ToInt32(day.ToString().Substring(1,1));

				if (month == dayParts1 + dayParts2) hapyhapyday++;
			}
		}

		
	}

}