#ifdef LOCAL
#include <local.hpp>
#else
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
#include <bits/stdc++.h>
#define debug(...) (static_cast<void>(0))
#define postprocess() (static_cast<void>(0))
#endif

// #include "atcoder/dsu.hpp"
// #include "atcoder/modint.hpp"
// using mint = atcoder::modint998244353;
// using mint = atcoder::modint1000000007;

using namespace std;
using ll = long long;
using ld = long double;

ll rec(ll N) {
    if (N == 1) {
        return 0;
    }

    if (N % 2 == 1) {
        return 1 + rec(N + 1);
    }

    for (int i = 1; i <= 30; i++) {
        if (N & (1 << i)) {
            return 1 + rec(N >> i);
        }
    }

    assert(false);
}

void solve([[maybe_unused]] int test) {
    ll N;
    cin >> N;
    cout << rec(N) << endl;
}

int main() {
    ios::sync_with_stdio(false), cin.tie(nullptr);

    int t = 1;
    // cin >> t;
    for (int _t = 1; _t <= t; _t++) solve(_t);

    postprocess();
}