#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ull = unsigned long long;
#define rep(i,a) for(int i=0;i<(a);i++)
#define MOD 1000000007

int main(){
  ll n; cin>>n;
  ll tmp=n;
  while(tmp%2==0&&tmp!=0){
    tmp/=2;
  }
  ll x=1, ans=0;
  while(x<tmp){
    x*=2;
    ans++;
  }
  ans+=(x-tmp);
  x=tmp;
  while(x!=n){
    x*=2;
    ans++;
  }
  cout<<ans<<endl;
  return 0;
}