N = input()


d = []
used = []
for i in range(10001):
    d.append(bin(i).count("1"))
    used.append(0)

que = [(1,1)]
ans = -1
while que:
    pos,cnt = que.pop(0)
    if pos == N:
        ans = cnt
        break
    left = pos-d[pos]
    right = pos + d[pos]

    if left>0 and not used[left]:
        used[left] = 1
        que.append((left,cnt+1))
    if right < N+1 and not used[right]:
        used[right] = 1
        que.append((right,cnt+1))

print ans