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

public class P
{
    public string s { get; set; }
    public string t { get; set; }
}

public class Hello
{
    public static void Main()
    {
        var s = Console.ReadLine().Trim();
        var ans = getAns(s);
        Console.WriteLine(ans);
    }
    public static int getAns(string s)
    {
        var sL = s.Length;
        if (sL == 1) return 1;
        var hs = new HashSet<string>();
        var q = new Queue<P>();
        q.Enqueue(new P { s = s.Substring(1), t = "" + s[0] });
        q.Enqueue(new P { s  = s.Substring(0,sL -1), t = "" + s[sL -1] });
        while (q.Count() > 0)
        {
            var w = q.Dequeue();
            if (w.s == "") { hs.Add(w.t); continue; }
            if (w.s.Length == 1) q.Enqueue(new P { s = "", t = w.t + w.s });
            else
            {
                q.Enqueue(new P { s = w.s.Substring(1), t = w.t + w.s[0] });
                q.Enqueue(new P { s = w.s.Substring(0, w.s.Length - 1), t = w.t + w.s[w.s.Length - 1] });
            }
        }
        return  hs.Count();
    }
}