def bitcnt(N):
	cnt = 0

	while N != 0:
		if N % 2 == 1:
			cnt += 1
		N = N // 2
	return cnt

N = int(input())

loc = 1
queue = [1]
list = {1:0}
cnt = 0

while True:

	loc = queue[0]
	cnt += 1	
	mov = bitcnt(loc)

	if loc + mov <= N:
		if loc + mov not in list:
			list[loc + mov] = cnt
			queue.append(loc + mov)

	if loc - mov >= 1:
		if loc - mov not in list:
			list[loc - mov] = cnt
			queue.append(loc - mov)
	queue.remove(loc)

	if queue == []:
		break

if N not in list:
	print(-1)
else:
	print(list[N])