using System;
using System.Collections.Generic;
using System.Linq;

namespace contest_cs
{
    class Program
    {
        static void Main(string[] args)
        {
            var line = Console.ReadLine();
            var sArr = line.Split(' ')
                .Select(it => it.StartsWith("S"))
                .ToArray();

            string ans;

            if (sArr[0])
            {
                if (sArr[1])
                {
                    ans = "8/33";
                }
                else
                {
                    ans = "8/32";
                }
            }
            else
            {
                ans = "8/31";
            }


            Console.WriteLine(ans);
        }
    }
}