using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            int HAPPY_DAY = 0;
            int[] month31 = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 3, 4 };
            int[] month30 = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 3 };
            int[] month28 = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
            foreach (int month in month31)
            {
                if (month == 1)
                {
                    HAPPY_DAY++;
                }
                if (month == 3)
                {
                    HAPPY_DAY++;
                }
                if (month == 5)
                {
                    HAPPY_DAY++;
                }
                if (month == 7)
                {
                    HAPPY_DAY++;
                }
                if (month == 8)
                {
                    HAPPY_DAY++;
                }
                if (month == 10)
                {
                    HAPPY_DAY++;
                }
                if (month == 12)
                {
                    HAPPY_DAY++;
                }
            }
            foreach (int month in month30)
            {
                if (month == 4)
                {
                    HAPPY_DAY++;
                }
                if (month == 6)
                {
                    HAPPY_DAY++;
                }
                if (month == 9)
                {
                    HAPPY_DAY++;
                }
                if (month == 11)
                {
                    HAPPY_DAY++;
                }
            }
            foreach (int month in month28)
            {
                if (month == 2)
                {
                    HAPPY_DAY++;
                }
            }
            Console.WriteLine(HAPPY_DAY);
        }
    }
}