036.cpp

#include <iostream>
using namespace std;

unsigned
reverse_bin (unsigned x)
{
  unsigned y = x & 1;
  x >>= 1;
  while (x > 0)
    {
      y = (y << 1) + (x & 1);
      x >>= 1;
    }
  return y;
}

unsigned
reverse_dec (unsigned x)
{
  unsigned y = x % 10;
  x /= 10;
  while (x > 0)
    {
      y = (y * 10) + (x % 10);
      x /= 10;
    }
  return y;
}

int
main ()
{
  unsigned sum = 0;

  for (unsigned k = 1; k < 1000000; k += 2)
    if (reverse_bin (k) == k)
      if (reverse_dec (k) == k)
        sum += k;

  cout << sum << endl;
  return 0;
}