#include <iostream>
#include <utility>
#include <vector>
#include <list>

using std::cin, std::cout, std::endl;

struct linked_list()
{
  int sled, prev;
  class point;
}

vector<linked_list> list;

class point {
 public:

  //методы
      point(int x, int y) : x{x}, y{y} {};

      ~point()
      {
        cout << "I'm dead" << endl;
      }

      point(const point &b)
      {
          x = b.x;
          y = b.y;
      }

      //функция
      int x_minus_y() {
        return (x - y);
      }

      void set_x(int a) {
        if (x > 0 && x < 100)
        {
          x = a;
        }
        else
        {
          cout << " x < 0 or > 100" << endl;
        }
      }

      void set_y(int a) {
        y = a;
      }

      int get_x() {
        return x;
      }

      int get_y() {
        return y;
      }

      pair<int, int> get_xy()
      {
        return make_pair(this.get_x(), this.get_y());
      }

 private:
    //поля
      int x, y;
      std::vector <int> v;

};

int main()
{
  point a = point(1, 10);
  point b = point(2, 6);
  point c;
  c.set_x(b.get_x() - a.get_x());
  c.set_y(b.get_y() - a.get_y());
  cout << c.get_x() << ' ' << c.get_y() << endl;
  cout << c.x_minus_y() << endl;
}