from Queue import Queue
n=input()
q=Queue()
q.put((1,1))
h=[False]*(n+1)
while not q.empty():
    a,b=q.get()
    if h[a]: continue
    h[a]=True
    if a==n:
        print b
        exit()
    bit=bin(a).count("1")
    if a+bit<=n: q.put((a+bit,b+1))
    if a-bit>0: q.put((a-bit,b+1))
print -1