// class Person --> Main class 
class Person {
    public :
    int age;
    string name;
    virtual void getdata()=0;   // actually pure virtual functions 
    virtual void putdata() =0;  
};
// class Professor
class Professor: public Person{
    public :
    int publications;
   static int cur_id;   // 
   int temp_id;    // for storing cur_id and assigning it then ++ 
    //constructor to ++ the cur id
    Professor(){temp_id=++cur_id; }
    void getdata();
    void putdata();
};
int Professor::cur_id=0;

// basically check the input and output and try to understan what's going on , then you can understand that " 1/2 is for either professor/student , but in o/p cur_id will also 1/2 is for because we have to initialize a static var. for each class starting from 0 ,  and will be ++ as per input -----> for all this we have to use a constructor which will automatically ++ that , if that class object is created . "

void Professor::getdata(){
    cin>>name>>age>>publications;
}

// 
void Professor::putdata(){
    cout<<name<<" "<<age<<" "<<publications<<" "<<temp_id<<endl;
}

// NOW STUDENT CLASS
class Student: public Person{
    public :
    int marks[6];
    static int cur_id;
    int temp_id;
    // same explanation check upper 
    Student(){
        temp_id=++cur_id;
    }
    
    void getdata();
    void putdata(); 
};

int Student::cur_id=0;
// 
void Student::getdata(){
    //cout<<"taking";
    cin>>name>>age;
    for(int i=0;i<6;i++){
        cin>>marks[i];
    } 
}

// 
void Student :: putdata(){
     int total_sum=0;
     for(int i=0;i<6;i++){
        total_sum=total_sum+marks[i];
     }
     cout<<name<<" "<<age<<" "<<total_sum<<" "<<temp_id<<endl;
    
}