n = int(input())
l = [[] for _ in range(n)]
for i in range(n):
    bl = bin((i+1)).count("1")
    a = (i+1) + bl
    b = (i+1) - bl
    if a <= n:
        l[i].append(a-1)
    if b >= 1:
        l[i].append(b-1)
from collections import deque
q = deque([[0,1]])
vis = [-1] * n
vis[0] = 1
while q:
    node,cnt = q.popleft()
#     print(q,node,cnt)
    for nd in l[node]:
        if vis[nd] == -1:
            vis[nd] = cnt + 1
            q.append([nd,cnt+1])
print(vis[-1])