// clearing unordered_multimap
#include <iostream>
#include <string>
#include <unordered_map>

int main ()
{
  std::unordered_multimap<std::string,std::string> myumm =
         { {"Tom","Produce"}, {"Bob","Toys"}, {"Bob","Garden"} };

  std::cout << "myumm contains:";
  for (auto& x: myumm) std::cout << " " << x.first << ":" << x.second;
  std::cout << std::endl;

  myumm.clear();
  myumm.insert(std::make_pair("Bob","Jail"));

  std::cout << "myumm contains:";
  for (auto& x: myumm) std::cout << " " << x.first << ":" << x.second;
  std::cout << std::endl;

  return 0;
}