N = int(input())
p = [float("inf")] * N
v = [0] * N
p[0] = 1
for i in range(N):
    bina = str(bin(i+1))
    for k in bina:
        if k == "1":
            v[i] += 1
i = 0
while(i < N):
    try:
        if p[i+v[i]] > p[i] + 1:
            p[i+v[i]] = p[i] + 1
    except IndexError:
        pass
    try:
        if p[i-v[i]] > p[i] + 1 and i - v[i] >= 0:
            p[i-v[i]] = p[i] + 1
            i = i-v[i]
            continue
    except IndexError:
        pass
    i += 1

if p[-1] + 1 == p[-1]:
    p[-1] = -1
print(p[-1])