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

namespace lecture
{
    class Program
    {
        static void Main(string[] args)
        {
           

            int[] values =
                new int[] { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
            int w = 0;
           int x,y,z;
            x=0;
            y=x;
            z=x;
            int A = 0;
            for (int i = 1; i <= 12; i++)
            {
                for (int a = 1; a <= values[i]; a++)
                {
                   x = a/10;
                    y= a%10;
                    z = x+y;
                        if(i == z){
                            A++;
                        }
                    }
                }
            Console.WriteLine ("HAPPY DAYは、{0}日です。",A);
            }
            
        }
    }