#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll=long long;
using ld=long double;
ld pie=3.141592653589793;
ll inf=4444444444444444444;
ll mod=1000000007;
int main(){
    ll n;
    cin >> n;
    queue<ll>que;
    vector<ll>memo(n+100,inf);
    memo[1]=1;
    vector<ll>two(30,1);
    for (ll i = 1; i < 30; i++)
    {
        two[i]=two[i-1]*2;
    }
    que.push(1);
    while (!que.empty())
    {
        ll v=que.front();
        que.pop();
        ll x=0;
        for (ll i = 0; i < 30; i++)
        {
            if (two[i]&v)
            {
                x+=1;
            }
        }
        if (v-x>0)
        {
            if (memo[v-x]>memo[v]+1)
            {
                que.push(v-x);
                memo[v-x]=memo[v]+1;
            }
        }
        if (v+x<=n)
        {
            if (memo[v+x]>memo[v]+1)
            {
                que.push(v+x);
                memo[v+x]=memo[v]+1;
            }
        }
    }
    if (memo[n]==inf)
    {
        cout << -1 << endl;
    }else{
        cout << memo[n] << endl;
    }
    
}