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

int main ()
{
  int array[20];
  for (int i = 0; i < 20; i++)
  {
    array[i] = i/4;
    cout << array[i] << ' ';
  }
  cout
    << "\n3 can be inserted at index: "
    << upper_bound (array, array + 20, 3) - array
    << endl;
  return 0;
}