#include <iostream>
#include <iomanip>
#include <vector>
using namespace std;


template<class T>
class Vector {
private:
    int size;
    T *data;
public:

    Vector(){
        size = 3;
        data = new T[size];
        data[0] = 0;
    }



    Vector(int _size){
        this->size = _size;
        this->data = new T[size];
        cout << "Viziv konstr: vvedite " << size << " el vectora: " << endl;
        for (int i = 0; i < size; i++){
            cin >> data[i];
        }
    }

    Vector(Vector& v){
        this->size = v.size;
        this->data = new T[this->size];
        for (int i = 0; i < v.size; i++){
            this->data[i] = v.data[i];
        }
    }
    friend ostream& operator<< (ostream& out, Vector<T> & v) {
        for (int i = 0; i < v.size; i++) {
            out << v[i] << " ";
        }
        out << endl;
        return out;
    }
    friend istream& operator>> (istream& is, Vector<T> & v);

    Vector<T> operator+ (const Vector& v){
        Vector temp(*this);
        for (int i = 0; i < this->size; i++){
            temp.data[i] += v.data[i];
        }
        return temp;
    }

    T& operator[] (const int i) {
        if (i < 0) { return data[0]; }
        if (i >= size) { return data[size - 1]; }
        return data[i];
    }

    ~Vector(){
        delete[] data;
    }
};


template<typename T>
istream& operator >> (istream& is, Vector<T> & v){
    for (int i = 0; i < v.size; i++) {
        is >> v[i];
    }
    return is;
}


int main()

{
    Vector<int>v1(3);
     Vector<int>v2(3);
     Vector<double>v3(3);
     Vector<double>v4(3);
    Vector<int> n ;
    n = v1 + v2;
    cout << "v1 + v2 = " << n;
    return 0;
}