#include<iostream>
#include<fstream>
#include<algorithm>
#include<string>
using namespace std;
class young{
protected:
    string fn;
    int age;
public :
    young(string a = "julia", int b = 20){
        fn = a;
        age = b;
    }
    ~young(){}
    friend istream& operator>>(istream&, young &);
    friend ostream& operator<<(ostream&, young &);

};
class university {
protected:
    string name;
    int fakult;
public:
    university(string a = "tsu", int b = 18){
        name = a;
        fakult = b;
    }
    ~university(){}
    friend istream& operator>>(istream&, university &);
    friend ostream& operator<<(ostream&, university&);
};
class student : public young, public university{
protected:
    string specialoba;
    double grade;
public:
    student(string a = "julia", int b = 20, string c = "tsu", int d = 18, string g = " matemati", double k = 2.3) :
        young(a, b), university(c, d), specialoba(g), grade(k){}
    ~student(){}
    double getgrade(){ return grade; }
    friend istream& operator>>(istream&, student&);
    friend ostream& operator<<(ostream&, student&);
};
 istream& operator>>(istream&ifs, young &h){
    return ifs >> h.fn >>h. age;
}
 ostream& operator<<(ostream&ofs, young &h){
    return ofs << " saxelia " << h.fn << "  age   " <<h. age << endl;

}
 istream& operator>>(istream&ifs, university&h){
    return ifs >>h. name >>h. fakult;
}
ostream& operator<<(ostream&ofs, university &h){
    return ofs << " uni saxelia " << h.name << " fakraod  " << h.fakult << endl;
}
 istream& operator >> (istream &ifs, student &k){
    ifs >> (young &)k >> (university&)k >> k.specialoba >> k.grade;
    return ifs;
}
ostream & operator<<(ostream &ofs, student &l){
    ofs << (young &)l << (university&)l << "speciealoba : " << l.specialoba << " grade:  " << l.grade << endl;
    return ofs;
}
int main(){
    young a;
    cout << " shemoitane youngis monacemi : " << endl;
    cin >> a;

    university *x;
    x=new university("tsu", 10);
    cout << a;
    cout << &x;
    student * y = new student[3];
    ifstream ifs("text.txt");
    for (int i = 0; i < 3; i++)
        ifs >> y[i];
    sort(y, y + 3, [](student &a, student &b) {return a.getgrade()>b.getgrade(); });
    ofstream ofs("ratee.txt");
    for (int i = 0; i < 3; i++)
        ofs << y[i];
    delete x;
    delete [] y;
    return 0;
}