def bitget(a):
	s = str(bin(a))
	n = len(s)
	counter = 0
	for i in range(n):
		if s[i] == '1':
			counter += 1
	return counter

n = int(input())
table = [0 for i in range(n+1)]
table[1] = 1
q = [1]
next = 0
while len(q) != 0:
	if len(q) == 1:
		next = bitget(q[0])
		if table[q[0]-next] == 0:
			table[q[0]-next] = table[q[0]]+1
			q.append(q[0]-next)
		if q[0]+next <= n and table[q[0]+next] == 0:
			table[q[0]+next] = table[q[0]]+1
			q.append(q[0]+next)
		q.pop(0)
	else:
		k = len(q)
		for i in range(k):
			next = bitget(q[i])
			if table[q[i]-next] == 0:
				table[q[i]-next] = table[q[i]]+1
				q.append(q[i]-next)
			if q[i]+next <= n and table[q[i]+next] == 0:
				table[q[i]+next] = table[q[i]]+1
				q.append(q[i]+next)
		for i in range(k):
			q.pop(0)
if table[n] != 0:
	print(table[n])
else:
	print('-1')