use std::cmp;

fn num2bin(p: &usize) -> usize {
    let mut x: usize = *p;
    let mut cnt: usize = 0;

    while x > 0 {
        cnt += x & 1;
        x = x >> 1;
    }
    cnt
}

fn main()
{
    let mut num = String::new();
    std::io::stdin().read_line(&mut num).ok().expect("ERROR");
    let mut num: usize = num.trim().parse().ok().expect("ERROR");

    let mut dp = vec![-1; num+1];
    let mut dp_new = vec![-1; num+1];
    dp[1] = 1;
    dp_new[1] = 1;

    let mut flag = true;

    while flag {
        flag = false;
        for i in 1..num+1 {
            if dp[i] < 1 {
                continue;
            }

            let inc = num2bin(&i);
            if i-inc > 1 {
                if dp[i-inc] < 0 {
                    dp_new[i-inc] = dp[i] + 1;
                }
                else {
                    dp_new[i-inc] = cmp::min(dp[i-inc], dp[i]+1);
                }
            }
            if i+inc <= num {
                if dp[i+inc] < 0 {
                    dp_new[i+inc] = dp[i] + 1;
                }
                else {
                    dp_new[i+inc] = cmp::min(dp[i+inc], dp[i]+1);
                }
            }
        }

        for i in 1..num+1 {
            if dp[i] != dp_new[i] {
                flag = true;
            }
            dp[i] = dp_new[i];
        }
    }

    println!("{}", dp[num]);
}