#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;
}
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