use std::io::Read;
use std::cmp;

fn main() {
    let mut buf = String::new();
    std::io::stdin().read_to_string(&mut buf).unwrap();
    
    let n: usize = buf.parse().unwrap();
    
    println!("{}", route_search(1, &mut vec![], n));
}

fn route_search(p: usize, route: &mut Vec<usize>, n: usize) -> isize {
    if route.contains(&p) {
        return -1
    } else {
        route.push(p);
    }
    
    if p < 1 || p > n {
        -1
    } else if p == n {
        route.len() as isize
    } else {
        let ones: usize = p.count_ones() as usize;
        let route_1: isize = route_search(p + ones, &mut route.clone(), n);
        let route_2: isize = route_search(p.saturating_sub(ones), &mut route.clone(), n);
        
        if route_1 == -1 {
            route_2
        } else if route_2 == -1 {
            route_1
        } else {
            cmp::min(route_1, route_2)
        }
    }
}