#include <iostream>
#include <stdio.h>
#include <string>
#include <list>
#include <vector>
#include <algorithm>

#define rep(i,n) for(int i = 0;i < n;i++)
#define REP(i,n,k) for(int i = n;i < k;i++)
#define P(p) cout << (p) << endl;//print
typedef long long ll;
using namespace std;


int main(){
    cin.tie(0);
   	ios::sync_with_stdio(false);
    
    int n;
    cin >> n;
    int ans = 0;
    while (true) {
        if(n==1){
            return ans;
        }
        if(n%2 == 1){
            n += 1;
            ans++;
        }else{
            n = n/2;
        }
    }
}