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

namespace y
{
    class Program
    {
        static void Main(string[] args)
        {
            var li1 = new List<string>();
            var s = Console.ReadLine();
            li1.Add("," + s);

            for (int i = 0; i < s.Length; i++)
            {
                var li2 = new List<string>();
                foreach (var item in li1)
                {
                    string[] ss = item.Split(',');
                    li2.Add(ss[0] + ss[1][0] + "," + ss[1].Remove(0,1));
                    li2.Add(ss[0] + ss[1][ss[1].Length - 1] + "," + ss[1].Remove(ss[1].Length - 1, 1));
                }
                li1 = li2;
            }

            Console.WriteLine(li1.Distinct().Count());
        }
    }
}