n=int(input())
INF=10**10

dp=[INF for i in range(n+1)]
dp[1]=1

def popcount(x):
    return bin(x).count("1")

que=[1]
head=0
while head<len(que):
    now=que[head]
    head+=1
    dif=popcount(now)
    if 1<=now+dif<=n and dp[now+dif]==INF:
        dp[now+dif]=dp[now]+1
        que.append(now+dif)
    dif*=-1
    if 1<=now+dif<=n and dp[now+dif]==INF:
        dp[now+dif]=dp[now]+1
        que.append(now+dif)

print(dp[-1]) if dp[-1]<INF else print(-1)