template<typename T>
    class TEquation
{
private:
    T x1, x2, D;
public:
    TEquation() : x1(0), x2(0), D(0){}

    T Square_Equation( const T a, const T b, const T c)
    {
        std::cout << a << "x*x +" << b << "x +" << c << "= 0" << std::endl;
        D = b * b - 4 * a * c;

        if( D < 0 )
        {
            std::cout << "net reshenia D<=0" << std::endl; 
        }
        else
        {
            std::cout << "D = " << b << "*" << b << "- 4*" << a << "*" << c << "=" << D << std::endl;
            std::cout << "D > 0" << std::endl;
            x1 = (-1*b + sqrt(D))/2*a;
            x2 = (-1*b - sqrt(D))/2*a;
            std::cout << "x1,2 = - " << b << " +- sqrt(" << D <<")" << "/ 2*" << a << std::endl;
            std::cout <<"x1 = "<< x1 << std::endl << "x2 = "<< x2 << std::endl;
        }
    }
    virtual ~TEquation()() {}
};

int main()
{
    int a, b, c;
    std::cin >> a >> b >> c;

    TEquation<int> object;
    
    object.Square_Equation(a, b, c);

    ::getch ();

    return 0;
}