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]
        bit1_count = "{:b}".format(u).count("1")
        v1 = u + bit1_count
        v2 = u - bit1_count
        if (0 < v1 <= N) and (v[v1] == 0):
            q.append(v1)
            v[v1] = v[u] + 1
        if (0 < v2 <= N) and (v[v2] == 0):
            q.append(v2)
            v[v2] = v[u] + 1
    return -1

print(bfs())