#include <iostream>
#include <unordered_map>

int
main()
{
	const std::string key = "abc";
	std::unordered_map<std::string, int> map;
	map[key] = 123;
	std::cout << map[key] << std::endl;
	std::cout << *(map + key) << std::endl;
	return 0;
}