use std::io::*;
use std::str::FromStr;
use std::collections::HashSet;

#[allow(dead_code)]
fn get_line() -> String {
    let stdin = stdin();
    let mut line = String::new();
    stdin.lock().read_line(&mut line).expect("io error.");
    line.trim().to_string()
}

#[allow(dead_code)]
fn cast<T: FromStr>(s: &str) -> T {
    s.parse().ok().expect("parse error.")
}

#[allow(dead_code)]
fn get_vec<T: FromStr>() -> Vec<T> {
    (&get_line()).split(' ').map(cast::<T>).collect()
}


/* ---------- ここまでテンプレ ---------- */


fn main() {
    let s = get_line();

    println!("{}", make_str(&s).len());
}

fn make_str(s: &str) -> HashSet<String> {
    let mut ret = HashSet::new();

    if s.len() == 1 {
        ret.insert(s.to_string());
        return ret;
    }

    for ss in make_str(&s[1..]) {
        ret.insert(s[0..1].to_string() + &ss);
    }

    let n: usize = s.len();
    for ss in make_str(&s[..n-1]) {
        ret.insert(s[n-1..n].to_string() + &ss);
    }

    return ret;
}