#define _USE_MATH_DEFINES #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include typedef long long int ll; //#include using namespace std; int main() { int Q; Q = 1; //cin >> Q; while (Q--) { ll n; cin >> n; ll t = n; ll p = 0; while (n > 1) { if (n % 2)n = n * 3 + 1; else n /= 2; t = max(t, n); p++; } cout << p<