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#include <iostream>

using namespace std;

int bitPower(int Note);
void muz(int N);

int main()
{
    int N;
    cin >> N;

    muz(N);

    return 0;
}

int bitPower(int Note)
{
    int Ret = 0;

    while (Note)
    {
        Ret += Note % 2;
        Note /= 2;
    }

    return Ret;
}
void muz(int N)
{
   int* Tab = new int[N + 1];
   int TabS = 0;

   int Sum = 0;
   int i = 0;
   while (Sum != N)
   {
       int iBitPower = bitPower(i + 1);

       if (Sum + iBitPower <= N)
       {
           Sum += iBitPower;
           Tab[i] = i + 1;
           TabS++;
       }
       else
           break;

       i++;
   }

   if (Sum != N)
       for (int j = TabS - 1; j >= 0; j--)
       {
           Sum -= bitPower(Tab[j]);
           Tab[j]++;
           Sum += bitPower(Tab[j]);

           if (Sum == N)
               break;
       }

   cout << TabS << "\n";
   for (int j = TabS - 1; j >= 0; j--)
       cout << Tab[j] << " ";
   cout << "\n";

   delete[] Tab;
}