class MyPair {

  public:

    int first;
    int second;

    MyPair(int x, int y) {
      this->first = x;
      this->second = y;
    }

    MyPair() {
      this->first = -1;
      this->second = -1;
    }

    MyPair(const MyPair &f) {
      this->first = f.getX();
      this->second = f.getY();
    }

    int getX() const {
      return this->first;
    }

    int getY() const {
      return this->second;
    }

};