from collections import deque

def count_1(n):
    return list((bin(n)))[2:].count("1")

class BiSugoroku():
    def __init__(self, n, step):
        self.n = n
        st = count_1(n)
        self.plus = self.n + st
        self.minus = self.n - st
        self.step = step


n = int(input())

q = deque([BiSugoroku(1, 1)])
visited = [1]
step = -1

while len(q) > 0:
    b = q.popleft()

    if  b.n == n:
        step = b.step
        break
    else:
        if b.plus <= n and not (b.plus in visited):
            q.append(BiSugoroku(b.plus, b.step + 1))
            visited.append(b.plus)

        if 0 < b.minus and not (b.minus in visited):
            q.append(BiSugoroku(b.minus, b.step + 1))
            visited.append(b.minus)

print(step)