害死人不偿命的(3n+1)猜想 (15)

 #include <iostream>
 #include <algorithm>
 using namespace std;

 int main(){

     int n;
     while (cin >> n){
         int ans = ;
         while (n != ){
             if (n %  == )
                 n /= ;
             else
                 n = ( * n + )/;
             ans++;
         }
         cout << ans << endl;
     }

     //system("pause");
     return ;
 }