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

int numbers[10] = { 0, 0, 1, 1, 2, 2, 2, 2, 3, 3 };

int main ()
{
  pair <int*, int*> range;
  range = equal_range (numbers, numbers + 10, 2);
  cout
    << "2 can be inserted from before index "
    << (range.first - numbers)
    << " to before index "
    << (range.second - numbers)
    << endl;
  return 0;
}