#include<bits/stdc++.h>
#define REP(i,n) for(int i=0;i<(n);i++)
#define ALL(v) (v).begin(),(v).end()
#define int long long

using namespace std;
typedef pair<int,int> P;

//-----------------------------------------------------------------------

signed main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);

    int n; cin>>n;
    int ans=0;
    while(n%2==0) n/=2,ans++;

    int i=0;
    while((1<<i)<n) i++;
    ans+=i+(1<<i)-n;
    cout<<ans<<endl;
}