#include <iostream>
#include <cstdlib>
#include <string>
#include "set.h"
using namespace std;
int main()
{
	::set<string> s;   //born empty
	s.insert("Mercury");
	s.insert("Venus");
	s.insert("Earth");

	cout << boolalpha
		<< s.find("Mercury") << "\n"
		<< s.find("Mongo")   << "\n";

	return EXIT_SUCCESS;
}