from collections import deque

N = int(input())


def bfs():
    v = deque([0] * (N + 1))
    v[1] = 1
    q = deque()
    q.append(1)
    while q:
        u = q.popleft()
        if u == N:
            return v[u]
        C = format(u, "b").count("1")
        v1 = u + C
        v2 = u - C
        if (1 <= v1 <= N) and v[v1] == 0:
            q.append(v1)
            v[v1] = v[u] + 1
        if (1 <= v2 <= N) and v[v2] == 0:
            q.append(v2)
            v[v2] = v[u] + 1
    return -1


print(bfs())