![](class Box { private: int l,b,h; public:

    Box(){ l = b = h = 0; }
    Box(int a, int b, int c)
    {
        l = a;
        this->b = b;
        h = c;
    }
    Box(Box &B)
    {
        l = B.l;
        b = B.b;
        h = B.h;
    }

    int getLength()  { return l; }
    int getBreadth() { return b; }
    int getHeight()  { return h; }
    long long CalculateVolume()    { return (long long)l*b*h; }

    bool operator<(Box &b)
    {
        if(l<b.l)
            return true;
        else if((this->b<b.b)&&(l == b.l))
            return true;
        else if(h<b.h && (l  == b.l)&&(this->b == b.b))
            return true;
        return false;
    }

    friend ostream& operator<<(ostream&, Box&);

};

ostream& operator<<(ostream &out, Box &b1) { out<https://)