jksndfsd

#include <iostream>
#include<cstring>

using namespace std;

class User {
protected:
    char username[50];
    char password[50];
    char email[50];
public:
    User(const char *username="",const char *password="",const char *email="") {
        strcpy(this->username,username);
        strcpy(this->password,password);
        strcpy(this->email,email);
    }
    virtual double popularity() {}
    ~User();
};

class FacebookUser:public User {
private:
    int prijateli;
    int lajkovi;
    int komentari;
public:
    FacebookUser(const char *username="",const char *password="",const char *email="",int prijateli=0,int lajkovi=0,int komentari=0):User(username,password,email) {
        this->prijateli=prijateli;
        this->lajkovi=lajkovi;
        this->komentari=komentari;
    }
    double popularity() {
        return (double)prijateli+((double)lajkovi*0.1)+((double)komentari*0.5);
    }

};

class TwitterUser:public User {
private:
    int sledaci;
    int tvitovi;
public:
    TwitterUser(const char *username="",const char *password="",const char *email="",int sledaci=0,int tvitovi=0):User(username,password,email) {
        this->sledaci=sledaci;
        this->tvitovi=tvitovi;
    }
    TwitterUser(const TwitterUser &tu) {
        strcpy(username,tu.username);
        strcpy(password,tu.password);
        strcpy(email,tu.email);
        sledaci=tu.sledaci;
        tvitovi=tu.tvitovi;
    }
    double popularity() {
        return (double)sledaci+((double)tvitovi*0.5);
    }
};

class SocialNetwork {
private:
    User **korisnici;
    int brKorisnici;
    static int MAX;
public:
    SocialNetwork() {
        korisnici=new User*[0];
        this->brKorisnici=0;
    }
    SocialNetwork& operator +=(User *u) {
        User **tmp=new User *[brKorisnici+1];
        for(int i=0; i<brKorisnici; i++) {
            tmp[i]=korisnici[i];
        }
        tmp[brKorisnici++]=u;
        delete[]korisnici;

        korisnici=tmp;

        return *this;
    }
    ~SocialNetwork() {
        delete[] korisnici;
    }

    double avgPopularity() {
        double vkupno=0;
        for(int i=0; i<brKorisnici; i++) {
            vkupno+=korisnici[i]->popularity();
        }
        return vkupno/brKorisnici;
    }
    static int changeMaximumSize(int number) {
        MAX=number;
    }


};
int SocialNetwork::MAX=5;
int main() {

    SocialNetwork network = SocialNetwork();
    int n;
    cin >> n;
    char username[50];
    char password[50];
    char email[50];
    int userType;
    for (int i=0; i < n; ++i) {
        cin >> username;
        cin >> password;
        cin >> email;
        cin >> userType;
        if (userType == 1) {
            int friends;
            int likes;
            int comments;
            cin >> friends >> likes >> comments;

            // TODO: Try-catch
            User * u = new FacebookUser(username,password,email,friends,likes,comments);
            network += u;

        } else {
            int followers;
            int tweets;
            cin >> followers >> tweets;

            // TODO: Try-catch
            User * u= new TwitterUser(username,password,email,followers,tweets);
            network += u;

        }

    }
    network.changeMaximumSize(6);
    cin >> username;
    cin >> password;
    cin >> email;
    int followers;
    int tweets;
    cin >> followers >> tweets;

    // TODO: Try-catch
    User * u= new TwitterUser(username,password,email,followers,tweets);
    network += u;

    cout << network.avgPopularity();

}