from collections import deque

def main():
    N = int(input())

    visited = [False] * (N + 1)
    visited[1] = True

    Q = deque([(1, 1)])
    while Q:
        n, c = Q.popleft()
        if n == N:
            print(c)
            quit()

        d = bin(n).count("1")
        for nn in (n + d, n - d):
            if 0 < nn <= N and not visited[nn]:
                visited[nn] = True
                Q.append((nn, c + 1))

    print(-1)

main()