#include <stl.h>
#include <stdlib.h>
#include <iostream.h>

int main ()
{
  vector <int> v1 (10);
  for (int i = 0; i < v1.size (); i++)
    v1[i] = rand () % 20;
  ostream_iterator <int> iter (cout, " ");
  copy (v1.begin (), v1.end (), iter);
  cout << endl;
  partition (v1.begin (), v1.end (), bind2nd(less<int>(), 11));
  copy (v1.begin (), v1.end (), iter);
  cout << endl;
  return 0;
}