import queue
import sys

n=int(input())
q=queue.Queue()
q.put([1,1,[False]*(n+1)])
while not q.empty():
    now=q.get()
    if now[0]==n:
        print(now[1])
        sys.exit()
    temp=now[0]
    ad=0
    while (temp > 0):
        if temp & 1:
            ad += 1
        temp = temp >> 1
    next=now[0]+ad
    if next<=n and not now[2][next]:
        now[2][next]=True
        q.put([next,now[1]+1,now[2]])
    next=now[0]-ad
    if next>0 and not now[2][next]:
        now[2][next]=True
        q.put([next,now[1]+1,now[2]])
print(-1)