#include <iostream>
using namespace std;

class Person
{
};

template <typename T>
class Vector{
friend ostream& operator<<(ostream& os, const Vector<T> &rop);
};

template<>
class Vector<Person>
{
	friend ostream& operator<<(ostream& os, const Vector<Person> &rop);
};

int main() {
	// your code goes here
	return 0;
}