from collections import deque

n = int(input())

tansaku = [0] * (n+1)
dp = [-1] * (n+1)
tansaku[1] = 1
dp[1] = 1

mada = deque([1])

while mada:
	i = mada.popleft()
	t = i
	cnt = 0
	while t:
		if t & 1:
			cnt += 1
		t >>= 1
	if i + cnt <= n:
		if tansaku[i + cnt] == 0:
			tansaku[i + cnt] = 1
			dp[i + cnt] = dp[i] + 1
			mada.append(i + cnt)
	if i - cnt >= 1:
		if tansaku[i - cnt] == 0:
			tansaku[i - cnt] = 1
			dp[i - cnt] = dp[i] + 1
			mada.append(i - cnt)

#print(dp)
print(dp[n])