#!/mnt/c/Users/moiki/bash/env/bin/python
# N,M = map(int, input().split())
N = int(input())
dp = [10**9 for _ in range(N+1)]
bcount  = [ bin(i).count("1") for i in range(N+1)]

from collections import deque
dp[1] = 1
stack = deque([(1,1)])

while stack:
    i,steps = stack.pop()
    cnt = bcount[i]

    if i == N:
        continue

    steps = steps+1
    back, forward = i-cnt, i+cnt

    if forward  <= N:
        # if dp[i]+1 < dp[i+cnt] :
        if steps < dp[forward]:
            stack.append( forward)
            dp[forward] = steps

    if 1 <=  back:
        if steps < dp[back] :
            stack.append(back)
            dp[back] = steps

print(dp[N] if dp[N] != 10**9 else -1)