// unordered_multiset::clear
#include <iostream>
#include <string>
#include <unordered_set>

int main ()
{
  std::unordered_multiset<std::string> myums =
    {"chair","table","lamp","sofa","chair"};

  std::cout << "myums contains:";
  for (const std::string& x: myums) std::cout << " " << x;
  std::cout << std::endl;

  myums.clear();
  myums.insert("bed");
  myums.insert("bed");
  myums.insert("wardrobe");
  myums.insert("nightstand");

  std::cout << "myums contains:";
  for (const std::string& x: myums) std::cout << " " << x;
  std::cout << std::endl;

  return 0;
}