#int(input())
#map(int, input().split())
#list(map(int, input().split()))

N = int(input())

def popcnt(n):
    return bin(n).count("1")

to = [[] for i in range(N+1)]
if N > 1:
    to[1] = [2]
for i in range(2, N+1):
    p = popcnt(i)
    if i + p <= N:
        to[i] = [i+p, i-p]
    else:
        to[i] = [i-p]

q = [1]

v = [-1] * (N+1)
v[1] = 1

from collections import deque
q = deque(q)

while q:
    t = q.popleft()
    for x in to[t]:
        if v[x] != -1:
            continue
        v[x] = v[t] + 1
        q.append(x)

print(v[N])