using System;
using System.Linq;
using System.Collections.Generic;
using System.Text;
using static System.Console;
using static System.Math;

class Program
{
    static void Main(string[] args)
    {
        string[] s = ReadLine().Split(' ');
        WriteLine(s.Count(x => x == "Sat" || x == "Sun") == 0 ? "8/31" : s[1] == "Sat" || s[1] == "Sun" ? "8/33" : "8/32");
    }
}