#include <iostream>
using namespace std;

int main()
{
   int n;
   cout << "Give me a non-zero integer! " << endl;
   cin >> n;

   int N;
   cout << "Give me an upper bound! " << endl;
   cin >> N;

   int count = 0;
   cout << "Starting doubling! " << endl;

   while (n < N) {
      cout << n << " " << endl;
      n *= 2; count++;
   }

   cout << "Finished in " << count << " steps." << endl;
}