# include < iostream >
# include < map >
#include < utility >

int main()
{
	std::map < int, int > m1;
	std::map < int, int > m2(m1);
	std::map < int, int > m3 = m1;

	typedef struct std::pair < int, int > PAIR;
	std::map < int, int > m1;
	m1.insert(PAIR(0, 10));
	m1.insert(PAIR(1, 20));
	std::map < int, int > m2(m1.begin(), m1.end());
	system("pause");
	return 0;
}