using System;
using System.Collections.Generic;

class SwapString
{
	static void Main(String[] args)
	{
		String S = Console.ReadLine();
		Queue<String> countQueue = new Queue<String>();
		HashSet<String> countHash = new HashSet<String>();

		countQueue.Enqueue(S);
		countHash.Add(S);
		while(countQueue.Count > 0)
		{
			String s = countQueue.Dequeue();
			for(int i=0; i < s.Length-1; i++)
			{
				char[] arr = s.ToCharArray();
				char temp = arr[i+1];
				arr[i+1] = arr[i];
				arr[i] = temp;
				String t = new String(arr);
				if(countHash.Add(t))
				{
					countQueue.Enqueue(t);
				}
			}
		}
		Console.WriteLine(countHash.Count-1);
	}
}