import sys,queue
input=lambda:sys.stdin.readline().rstrip()
def count(N):
	return bin(N).count('1')
def con(a):
	return [a+count(a+1),a-count(a+1)]
N=int(input())
dist=[float('inf') for i in range(N)]
dist[0]=1
q=queue.SimpleQueue()
q.put(0)
while not q.empty():
	temp=q.get()
	for i in con(temp):
		if 0<=i<N and dist[i]>dist[temp]+1:
			dist[i]=dist[temp]+1
			q.put(i)
print(dist[N-1] if dist[N-1]!=float('inf') else -1)