use std::io::*;
use std::str::*;

const MOD: i32 = 1000000007;

fn read<T: FromStr>() -> Option<T> {
    let stdin = stdin();
    let s = stdin
        .bytes()
        .map(|c| c.unwrap() as char)
        .take_while(|c| !c.is_whitespace())
        .collect::<String>();
    s.parse::<T>().ok()
}
use std::collections::HashSet;



fn dfs(a: String, b: &String, mut hs: &mut HashSet<String>) {
    //    println!("a:{} b:{}", a, b);
    if a.len() == 1 {
        let s = b.to_string() + &a;
        //        println!("inserting .. {}", s);
        hs.insert(s);
        return;
    }

    let front = b.to_string() + &a[0..1].to_string();
    let back = b.to_string() + &a[a.len() - 1..a.len()].to_string();

    // println!("front : {}", front);
    // println!("back  : {}", back);

    dfs(a[1..(a.len())].to_string(), &front, hs);
    dfs(a[0..(a.len() - 1)].to_string(), &back, hs);
}



fn main() {
    let mut hs: HashSet<String> = HashSet::new();
    let s: String = read().unwrap();
    if s.len() == 1 {
        println!("1");
        return;
    }
    if s.len() == 2 {
        if s.chars().nth(0) == s.chars().nth(1) {
            println!("1");
            return;
        }
        println!("2");
        return;
    }
    dfs(s, &"".to_string(), &mut hs);
    println!("{}", hs.len());

}