using System;

namespace test
{
    class Program
    {
        public static int DaysInYear = 356;
        public static int MonthInYear = 12;
        public static int WeaksInYear = 48;
        public static int WorkedInYear = WeaksInYear * 5;
        public static int SundayInYear = WeaksInYear;

        static void Main(string[] args)
        {
            for (int i = 1; i < 98; i++)
            {
                for (int j = 1; j < 99 - i; j++)
                {
                    if (Check(i, j, 100 - i - j))
                    {
                        Console.WriteLine(i * SundayInYear / WorkedInYear);
                        return;
                    }
                }
            }
        }

        static bool Check(int mother, int father, int grandmother)
        {
            int y1 = mother * SundayInYear / WorkedInYear;
            int y2 = father * WeaksInYear / DaysInYear;
            int y3 = grandmother / MonthInYear;

            return (y1 == y2 && y2 == y3);
        }
    }
}