from itertools import *
from bisect import *
#from math import *
from collections import *
from heapq import *
from random import *
from decimal import *
import numpy as np
import sys

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def II(): return int(sys.stdin.readline())
def MI(): return map(int, sys.stdin.readline().split())
def MI1(): return map(int1, sys.stdin.readline().split())
def MF(): return map(float, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LF(): return list(map(float, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
dij = [(1, 0), (0, 1), (-1, 0), (0, -1)]

def main():
    n=II()
    hp=[]
    heappush(hp,[1,1])
    cnt=[-1]*(n+1)
    while hp:
        c,u=heappop(hp)
        if u==n:
            print(c)
            exit()
        d=bin(u).count("1")
        if u+d==n or u-d==n:
            print(c+1)
            exit()
        cnt[u]=c
        if u+d<=n and cnt[u+d]==-1:heappush(hp,[c+1,u+d])
        if u-d>1 and cnt[u-d]==-1:heappush(hp,[c+1,u-d])
    print(-1)

main()