use std::io;
use std::io::prelude::*;
use std::io::BufReader;
use std::collections::vec_deque::VecDeque;

fn run(args: &Vec<String>) -> Vec<String> {
    let n: u32 = args[0].parse().unwrap();

    let mut queue: VecDeque<(u32, u32)> = VecDeque::new();
    let mut visited = vec![false; (n + 1) as usize];

    queue.push_back((1, 1));
    while !queue.is_empty() {
        let (k, c) = queue.pop_front().unwrap();
        if k == n {
            return vec!(c.to_string());
        }

        let b = bits(k);

        let b1 = k - b;
        if b1 >= 1 && !visited[b1 as usize] {
            queue.push_back((b1, c + 1));
            visited[b1 as usize] = true;
        }

        let b2 = k + b;
        if b2 <= n && !visited[b2 as usize] {
            queue.push_back((b2, c + 1));
            visited[b2 as usize] = true;
        }
    }
    vec!["-1".to_string()]
}

fn bits(n: u32) -> u32 {
    let mut n = n;
    let mut c = 0;

    while n > 0 {
        if n & 1 == 1 {
            c += 1;
        }
        n = n >> 1;
    }

    c
}

fn main() {
    let args = lines(BufReader::new(io::stdin()));
    for line in run(&args) {
        println!("{}", line);
    }
}

fn lines<R: Read>(reader: BufReader<R>) -> Vec<String> {
    reader.lines().map(|l| l.unwrap()).collect()
}