import sys

def popcnt(n):
    return len(list(filter(lambda c: c == '1', list(str(bin(n))))))

def mov(e, p = 1, t = []):
    if p in t or p > e or p < 1:
        return -1

    q = popcnt(p)
    t.append(p)

    if p == e:
        return len(t)

    r = list(filter(lambda i: i >= 0, [mov(e, p + q, t), mov(e, p - q, t)]))
    if len(r) > 0:
        return min(r)
    else:
        return -1

print(mov(int(input())))