from collections import deque

N = int(input())
d = [-1] * N
checked = [False] * N
p = [None] * N
nxts = deque([0])
checked[0] = True

while nxts:
    pos = nxts.popleft()

    if pos == 0:
        d[pos] = 1
    else:
        d[pos] = d[p[pos]] + 1

    if pos == N - 1:
        print(d[N - 1])
        quit()

    step = bin(pos + 1).count('1')

    if pos - step >= 0 and not checked[pos - step]:
        nxts.append(pos - step)
        checked[pos - step] = True
        p[pos - step] = pos
    if pos + step < N and not checked[pos + step]:
        nxts.append(pos + step)
        checked[pos + step] = True
        p[pos + step] = pos

print(-1)