fn bits(n: usize) -> usize {
    let mut n = n;
    let mut c = 0;
    while n > 0 {
        if n & 1 == 1 {
            c += 1;
        }
        n = n >> 1;
    }
    c
}

use std::io::stdin;
use std::collections::VecDeque;
pub fn main() {
    let n: usize = {
        let mut s = String::new();
        let _ = stdin().read_line(&mut s);
        s.trim().parse().unwrap()
    };

    let mut flags = vec![false; n + 1];
    let mut answer = -1;
    let mut v = VecDeque::<(usize, i32)>::new();
    v.push_back((1, 1));
    while let Some((pos, dist)) = v.pop_front() {
        if pos == n {
            answer = dist;
            break;
        }
        let mv = bits(pos);
        let (left, right) = (pos - mv, pos + mv);
        if right <= n && flags[right] == false {
            v.push_back((right, dist + 1));
            flags[right] = true;
        }
        if left > 1 && flags[left] == false {
            v.push_back((left, dist + 1));
            flags[left] = true;
        }
    }
    println!("{}", answer);
}