#include <iostream>
#include <string>
#include <sstream>
#include <vector>

class Person {
protected:
    std::string m_Name, m_Surname;

public:
    Person() {
    }
    Person(std::string &s, std::string &f) :
            m_Name(f), m_Surname(s) {
    }

    void set_name(std::string &f) {
        m_Name = f;
    }

    void set_surname(std::string &s) {
        m_Surname = s;
    }

    const std::string& get_name() const {
        return m_Name;
    }

    const std::string& get_surname() const {
        return m_Surname;
    }

    virtual void print(std::ostream &o) const {
        o << "<person" << " S " << m_Surname << " N " << m_Name << " >";
    }

    virtual ~Person() {}
};

class Person_with_telephone: public virtual Person {
protected:
    std::string m_Telephone;

protected:
    Person_with_telephone(const std::string &telephone) :
            m_Telephone(telephone) {
    }

public:
    Person_with_telephone() {
    }
    Person_with_telephone(std::string &s, std::string &f, std::string &telephone) :
            Person(s, f), m_Telephone(telephone) {
    }

    void set_telephone(std::string &telephone) {
        m_Telephone = telephone;
    }

    const std::string& get_telephone() const {
        return m_Telephone;
    }

    virtual void print(std::ostream &o) const override {
        o << "<person" << " S " << m_Surname << " N " << m_Name
              << " T " << m_Telephone << " >";
    }
};

class Person_with_email: public virtual Person {
protected:
    std::string m_Email;

protected:
    Person_with_email(const std::string &email) :
            m_Email(email) {
    }

public:
    Person_with_email() {
    }
    Person_with_email(std::string &s, std::string &f, std::string &email) :
            Person(s, f), m_Email(email) {
    }

    void set_email(std::string &email) {
        m_Email = email;
    }

    const std::string& get_email() const {
        return m_Email;
    }

    virtual void print(std::ostream &o) const override {
        o << "<person" << " S " << m_Surname << " N " << m_Name << " E " << m_Email << " >";
    }
};

class Person_with_telephone_and_email: public virtual Person_with_telephone,
        public virtual Person_with_email {
public:
    Person_with_telephone_and_email() {
    }
    Person_with_telephone_and_email(std::string &s, std::string &f, std::string &telephone,
            std::string &email) :
            Person(s, f), Person_with_telephone(telephone), Person_with_email(email) {
    }

    virtual void print(std::ostream &o) const override {
        o << "<person" << " S " << m_Surname << " N " << m_Name
          << " T " << m_Telephone << " E " << m_Email << " >";
    }
};

Person* read_person(std::istream &in) {
    std::string tmp, fname, surname, email, telephone;
    in >> tmp;

    // Did we reach the end of the stream?
    if(!in) {
        return nullptr;
    }

    if (tmp == "<person") {
        in >> tmp;
        while (tmp != ">") {
            if (tmp == "S") {
                in >> surname;
            } else if (tmp == "N") {
                in >> fname;
            } else if (tmp == "T") {
                in >> telephone;
            } else if (tmp == "E") {
                in >> email;
            } else {
                std::cerr << "Unknown token: " << tmp << "\n";
                return nullptr;
            }
            in >> tmp;
        }
    } else {
        std::cerr << "Bad starting sequence: " << tmp << std::endl;
        return nullptr;
    }

    if (email != "" && telephone != "") {
        return new Person_with_telephone_and_email(surname, fname, telephone, email);
    } else if (email != "") {
        return new Person_with_email(surname, fname, email);
    } else if (telephone != "") {
        return new Person_with_telephone(surname, fname, telephone);
    }
    return new Person(surname, fname);
}

int main() {
    std::stringstream ss("<person S Smith N Tom >\n<person S Smith N Dick T +49.921.1434 >\n<person S Smith N Harry E hsmith@gmail.com >\n<person S Smith N Mary T +39.921.1434 E msmith@gmail.com >\n<person S John N John T +33.921.1434 E jjohn@gmail.com >");

    std::vector<Person*> people;
    std::string tmp;

    while(Person* p = read_person(ss)) {
        people.push_back(p);
    }

    for (auto &p : people) {
        p->print(std::cout);
        std::cout << std::endl;
    }

    for (auto &p : people) {
        delete p;
    }
}