#include <iostream>
#include <math.h>

using namespace std;

class Vector{

    double x;
    double y;

    public:

    Vector();
    Vector(double, double);

    void print();
    double abs();
};

Vector::Vector(double x, double y){
    this->x=x;
    this->y=y;
}

Vector::Vector(){
    cin >> x >> y;
}
void Vector::print(){
    cout << "(" << x << "," << y << ")" << endl;;
}

double Vector::abs(){

    return sqrt(x*x+y*y);
}



int main(int argc, char** argv) {
    // Vector *v = new Vector(1,2); // konstruktoros obj letrehozas
    Vector *v = new Vector(); //obj letrehozas
    v -> print(); // fuggvenyhivas
    cout << v -> abs(); // kiiratni az absz erteket
    delete v; // memoria felszabaditas

    return 0;
}