template<typename T>
    class matrix
    {
    public:

        matrix(const std::initializer_list<T>& list)
        {
            for (size_t i = 0; i < list.size(); ++i)
                for (size_t j = 0; j < data.size(); ++j)
                    data[j] = list[i];
        }

        matrix(){}

        T operator[](size_t idContainer) const {
            return  data[idContainer];
        }

        T& operator[](size_t idContainer) {
            return  data[idContainer];
        }

        size_t size() const {
            return data.size();
        }

    private:
        std::vector<T> data;
    };