#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;

int main() {
    
    long long N;
    cin >> N;
    
    long long n = N;
    long long a = 0;
    while ( n%2 == 0 ) {
        n /= 2;
        a++;
    }
    
    long long ans = 0;
    long long x = 1;
    while ( x < n ) {
        x *= 2;
        ans++;
    }
    ans += x-n;
    ans += a;
    
    cout << ans << endl;
    
    return 0;
}