#include <bits/stdc++.h>
using namespace std;
typedef int64_t ll;

ll bitCount(ll n){
  ll res=0;
  while(n>0){
    res+=n&1;
    n>>=1;
  }
  return res;
}

void solve() {
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  ll n;
  cin >> n;
  vector<bool> seen(n+1,false);
  deque<pair<ll,ll>> dq;
  dq.push_back({1,1});
  while(!dq.empty()){ 
    auto [a,b]=dq.front();
    dq.pop_front();
    if(a==n){
      cout << b << endl;
      return;
    }
    if(seen.at(a)) continue;
    seen.at(a)=true;
    if(a-bitCount(a)>=1){
      dq.push_back({a-bitCount(a),b+1});
    }
    if(a+bitCount(a)<=n){
      dq.push_back({a+bitCount(a),b+1});
    }
  }
  cout << -1 << endl;
}

int main() { solve();system("pause"); }