n = int(input())

visited = [-1 for i in range(n+1)]

q = [[1,1]]
visited[0] = 1
visited[1] = 1

while q :
	p , i = q.pop(0)
	if p == n:
		print i
		quit()

	a = p + bin(p).count("1")
	if a < n + 1 and visited[a] == -1:
		visited[a] = 1
		q.append([a,i + 1])

	b = p - bin(p).count("1")
	if 0 < b and visited[b] == -1:
		visited[b] = 1 
		q.append([b,i + 1])

print -1