#include <iostream>

#include <string>

#include <vector>

#include <memory>

using namespace std;

class Person

{

  public:

    string name;

    shared_ptr<Person> mother;

    shared_ptr<Person> father;

    vector<weak_ptr<Person>> kids;

    Person(const string& n,

      shared_ptr<Person> m=nullptr,

      shared_ptr<Person> f = nullptr)

    :name(n),mother(m),father(f){}

    ~Person(){

      cout<<"delete"<<name<<endl;

    }

};

shared_ptr<Person> initFamily(const string& name)

{

  shared_ptr<Person> mom(new Person(name+"'s mom"));

  shared_ptr<Person> dad(new Person(name+"'s dad"));

  shared_ptr<Person> kid(new Person(name,mom,dad));

  mom->kids.push_back(kid);

  dad->kids.push_back(kid);


  return kid;

}

int main()

{

  shared_ptr<Person> p = initFamily("nico");

  cout<<"nico's family exists"<<endl;

  cout<<"- nico is shared"<<p.use_count<<" times"<<endl;

  cout<<"-name of 1st kid of kico's mom:"<<p->mother->kids[0]->name<<endl;

  p->initFamily("jim");

  cout<<"jim's family exists..."<<endl;

  return 0;

}