#include <iostream>
#include <string>
  
  mymap['a']="an element";
  mymap['b']="another element";
  mymap['c']=mymap['b'];
  
  std::cout << "mymap['a'] is " << mymap['a'] << '\n';
  std::cout << "mymap['b'] is " << mymap['b'] << '\n';
  std::cout << "mymap['c'] is " << mymap['c'] << '\n';
  std::cout << "mymap['d'] is " << mymap['d'] << '\n';
  
  std::cout << 
"mymap now contains " << mymap.
size() << 
" elements.\n";
 
  
  return 0;
}