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#include <iostream>

using namespace std;
bool tab[1000000];
int main()
{
   int n;
   cin >> n;
   int licz = 0, sum=0;
   while(sum < n)
   {
      licz++;
      tab[licz] = true;
      sum += __builtin_popcount(licz);
   }
   int m = licz;
   int z = licz;
   while(sum > n)
   {
      --m;
      if(__builtin_popcount(m) + n > sum)
      {

      }
      else
      {
         sum -= __builtin_popcount(m);
         tab[m] = false;
         z--;
      }
   }
   cout << z << endl;
   for(int i = licz; i > 0; i--)
   {
      if(tab[i] == true)
      {
         cout << i << " ";
      }
   }
}