using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;
using System.Text.RegularExpressions;
using System.Linq;


class Magatro
{
    static string S = Console.ReadLine();
    static void Main()
    {
        HashSet<string> Hs = new HashSet<string>();
        int loop = (int)Math.Pow(2, S.Length);
        for(int i = 0; i < loop; i++)
        {
            int L = 0;
            int R = S.Length - 1;
            int q = i;
            string T = "";
            for(int j = 0; j < S.Length; j++)
            {
                if (q % 2 == 1)
                {
                    T += S[L];
                    L++;
                }
                else
                {
                    T += S[R];
                    R--;
                }
                q /= 2;
            }
            Hs.Add(T);
        }
        Console.WriteLine(Hs.Count);
    }

}