#include <map>
#include <iostream>

using namespace std;

int main()
{
  map<string, list<int> > a;

  a["cat"] = list<int>;
  a["cat"].push_back(5);


  for (map<string, list<int> >::iterator i = a.begin(); i != a.end(); ++i)
    {
      cout << i->first << " maps to ";
      for (list<int>::iterator 
    }
  cout << a["cat"] << endl;

}