using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Collections.Generic;
using Enu = System.Linq.Enumerable;

class Program
{
    public void Solve()
    {
        var S = Reader.String();
        var hash = new HashSet<string>();
        var que = new Queue<string>();
        que.Enqueue(S);

        while (que.Count > 0)
        {
            var cs = que.Dequeue().ToCharArray();
            for (int i = 0; i + 1 < S.Length; i++)
            {
                Swap(ref cs[i], ref cs[i + 1]);
                var s = new string(cs);
                if (!hash.Contains(s))
                {
                    hash.Add(s);
                    que.Enqueue(s);
                }
            }
        }

        hash.Remove(S);
        Console.WriteLine(hash.Count);
    }

    static void Swap<T>(ref T a, ref T b) { T t = a; a = b; b = t; }

}

class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
    private static TextReader reader = Console.In;
    private static readonly char[] separator = { ' ' };
    private static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
    private static string[] A = new string[0];
    private static int i;
    private static void Init() { A = new string[0]; }
    public static void Set(TextReader r) { reader = r; Init(); }
    public static void Set(string file) { reader = new StreamReader(file); Init(); }
    public static bool HasNext() { return CheckNext(); }
    public static string String() { return Next(); }
    public static int Int() { return int.Parse(Next()); }
    public static long Long() { return long.Parse(Next()); }
    public static double Double() { return double.Parse(Next()); }
    public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
    public static int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }
    public static int[][] IntTable(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }
    public static string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); }
    public static string Line() { return reader.ReadLine().Trim(); }
    private static string[] Split(string s) { return s.Split(separator, op); }
    private static string Next() { CheckNext(); return A[i++]; }
    private static bool CheckNext()
    {
        if (i < A.Length) return true;
        string line = reader.ReadLine();
        if (line == null) return false;
        if (line == "") return CheckNext();
        A = Split(line);
        i = 0;
        return true;
    }
}