// http://yukicoder.me/problems/11
open System

let dprintfn fmt = Printf.kprintf Diagnostics.Debug.WriteLine fmt

let bitcount n =
    let rec loop bits num =
        if bits = 0 then num
        else loop (bits &&& (bits-1)) (num+1)
    loop n 0

let solve N =
    let dp = Array.init (N+1) (fun _ -> -1)
    let rec f i ans =
        dp.[i] <- if dp.[i] > 0 then min dp.[i] ans else ans
        if i = N then () else
        let n = bitcount i
        if i+n < N+1 && dp.[i+n] = -1 then
            f (i+n) (ans+1)
        if i-n > 0 && dp.[i-n] = -1 then
            f (i-n) (ans+1)
    f 1 1
    dp.[N]

[<EntryPoint>]
let main argv = 
    let N = Console.ReadLine() |> int
    solve N
    |> printfn "%d" 
    0