from queue import Queue

def culc_num_of_bits(bits):
    return bin(bits).count('1')

N = int(input())
m = [-1 for i in range(N+1)]
m[1] = 1

Q = Queue()
Q.put(1)

while not Q.empty():
    c = Q.get()
    b = culc_num_of_bits(c)
    if c + b <= N and m[c + b] == -1:
        m[c + b] = m[c] + 1
        Q.put(c + b)
    if c - b > 0 and m[c - b] == -1:
        m[c - b] = m[c] + 1
        Q.put(c - b)

print(m[N])