#!/usr/bin/env python
N = int(input())
F = [[0 for j in range(2)] for i in range(N+1)]
for i in range(1,N+1):
  F[i][0] = format(i,'b').count('1')
F[1][1] = 1
F[N][1] = -1
def check(F, p):
  n = F[p][0]
  c = F[p][1]
  if p - n > 0 and F[p - n][1] < 1:
    F[p - n][1] = c + 1
    check(F, p - n)
  if p + n < N + 1 and F[p + n][1] < 1:
    F[p + n][1] = c + 1
    check(F, p + n)
  return F
R = check(F, 1)
print(R[N][1])