// multiset::clear
#include <iostream>
#include <set>

int main ()
{
  std::multiset<int> mymultiset;

  mymultiset.insert (11);
  mymultiset.insert (42);
  mymultiset.insert (11);

  std::cout << "mymultiset contains:";
  for (std::multiset<int>::iterator it=mymultiset.begin(); it!=mymultiset.end(); ++it)
    std::cout << ' ' << *it;
  std::cout << '\n';

  mymultiset.clear();
  mymultiset.insert (200);
  mymultiset.insert (100);

  std::cout << "mymultiset contains:";
  for (std::multiset<int>::iterator it=mymultiset.begin(); it!=mymultiset.end(); ++it)
    std::cout << ' ' << *it;

  std::cout << '\n';

  return 0;
}