#include <iostream>
#include <vector>

class binFa
{
    char value;
    binFa *righElem;
    binFa *leftElem;

  public:
    binFa(char elem) : value(elem)
    {
        rightElem = NULL;
        leftElem = NULL;
    }
    binFa(const binFa &fa)
    {
        value = fa.value;
        rightElem = new binFa(fa.rightElem->value);
        leftElem = new binFa(fa.leftElem->value);
    }
    binFa &operator<<(char elem)
    {
        if (elem == '0')
            leftElem = new binFa(elem);
        else
            rightElem = new binFa(elem);
        return *this;
    }
    void writeStuff(binFa *fa)
    {
        std::cout << fa->value << " ";
        if (fa->rightElem != NULL || fa->leftElem != NULL)
        {
            kiir(fa->leftElem);
            kiir(fa->rightElem);
        }
    }
    std::ostream &operator<<(std::ostream &os)
    {
        os << this->value;
        return os;
    }
};

int main()
{
    binFa *obj = new binFa('/');
    *obj << '0' << '1' << '0';
    std::cout << obj;
    obj->writeStuff(obj);
    delete obj;
    return 0;
}