from collections import deque

N=int(input())

DP=[1<<30]*(N+1)
DP[1]=1

Q=deque([1])
while Q:
    x=Q.popleft()
    b=bin(x).count("1")

    if x+b<=N and DP[x+b]>DP[x]+1:
        DP[x+b]=DP[x]+1
        Q.append(x+b)

    if x-b<=N and DP[x-b]>DP[x]+1:
        DP[x-b]=DP[x]+1
        Q.append(x-b)

if DP[N]==1<<30:
    print(-1)
else:
    print(DP[N])