import java.io.*;
import java.util.*;

public class Main {
    private void run() {
        String S = read();
        HashSet<String> set = new HashSet<String>();
        set.add(S);
        Stack<String> stk = new Stack<String>();
        stk.push(S);
        while (!stk.isEmpty()) {
            String t = stk.pop();
            for (int i = 0; i < t.length() - 1; i++) {
                char[] uu = t.toCharArray();
                char tmp = uu[i];
                uu[i] = uu[i + 1];
                uu[i + 1] = tmp;
                String u = new String(uu);
                if (!set.contains(u)) {
                    set.add(u);
                    stk.push(u);
                }
            }
        }
        sysout.println(set.size() - 1);
    }

    public static void main(String[] args) {
        new Main().run();
    }

    // flush automatically iff you call `println` or `printf` or `format`.
    PrintWriter sysout = new PrintWriter(System.out, true);

    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer buffer = null;

    String readLine() {
        buffer = null;
        try {
            return in.readLine();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    String read() {
        if (buffer == null || !buffer.hasMoreTokens()) {
            buffer = new StringTokenizer(readLine());
        }
        return buffer.nextToken();
    }

    int readInt() {
        return Integer.parseInt(read());
    }

    long readLong() {
        return Long.parseLong(read());
    }

    double readDouble() {
        return Double.parseDouble(read());
    }
}