fn movable(x: usize) -> usize {
    let s: String = format!("{:b}", x);
    s.chars().filter(|&c| c == '1').count()
}

fn run(xs: &mut [i32], idx: usize, val: i32) {
    if idx < 1 || idx > xs.len() - 1 {
        return;
    }

    if xs[idx] != -1 {
        return;
    }

    xs[idx] = val;

    let (left, right) = {
        let m = movable(idx);
        (idx - m, idx + m)
    };
    run(xs, left, val + 1);
    run(xs, right, val + 1);
}

use std::io::stdin;
pub fn main() {
    let n: usize = {
        let mut s = String::new();
        let _ = stdin().read_line(&mut s);
        s.trim().parse().unwrap()
    };
    let mut trout = vec![-1; n + 1];
    run(&mut trout, 1, 1);
    println!("{}", trout[n]);
}