#include <hash_map>

#include <string>

#include <iostream>

using namespace std;

using namespace stdext;

int main(){

	hash_map<string, string> mymap;



	mymap["aa"] = "Hello!";

	mymap["bb"] = "You are who?";

	mymap["cc"] = "See you!";



	cout<<mymap["bb"]<<endl;

	return 0;

}