using System;
using System.Collections.Generic;
using System.Globalization;

class Program
{
    public static void Main(string[] args)
    {
        var s = Console.ReadLine();
        var charactors = s.ToCharArray();
        var head = 0;
        var tail = s.Length - 1;
        var sets = new HashSet<string>();
        Dfs(sets, charactors, head, tail, "");
        Console.WriteLine(sets.Count);
    }

    private static void Dfs(HashSet<string> sets, char[] charactors, int head, int tail, string current)
    {
        if (head == tail)
        {
            if (!sets.Contains(current))
            {
                sets.Add(current);
            }
            return;
        }
        Dfs(sets, charactors, head+1, tail, current + charactors[head]);
        Dfs(sets, charactors, head, tail-1, current + charactors[tail]);
    }
}