#!usr/bin/env python3
from collections import defaultdict, deque
from heapq import heappush, heappop
from itertools import permutations, accumulate
import sys
import math
import bisect
def LI(): return [int(x) for x in sys.stdin.readline().split()]
def I(): return int(sys.stdin.readline())
def IR(n):
    return [I() for _ in range(n)]
def LIR(n):
    return [LI() for _ in range(n)]

sys.setrecursionlimit(1000000)
mod = 1000000007

def main():
    def popcount(n):
        return bin(n).count("1")

    n = I()
    d = [float("inf")]*(n+1)
    d[1] = 1
    q = deque([1])
    while q:
        x = q.popleft()
        dx = popcount(x)
        nd = d[x]+1
        for nx in (x-dx,x+dx):
            if 1 <= nx <= n and nd < d[nx]:
                d[nx] = nd
                q.append(nx)
    ans = d[n]
    if ans == float("inf"):
        ans = -1
    print(ans)
    return


if __name__ == "__main__":
    main()