#include <iostream>

using namespace std;

// Base class
class Animal  {
public:
  void setWeight(int w) {
    this->weight = w;
  }

  void die() {
    this->energy = 0;
  }


  int getWeight() {
    return this->weight;
  }

  virtual void saySomething(){
    cout << "";
  }

  void run(int speed){
    this->energy -= speed/10;
  }

  void eat(int callories){
    this->energy += callories/10;
  }

  static void action(Animal& x, Animal& y){
    if(x.getWeight() > y.getWeight()){
      y.die();
    } else
      x.die();
  }

  Animal(void){
    this->energy = 50;
  }

  protected:
  int weight;
  int energy;
};

// Derived class
class Mouse: public Animal {
public:
  void saySomething() {
    if(this->energy>0)
      cout << "PIPIPI\n" ;
    else
      cout << "mouse is dead";
  }
};

class Cat: public Animal {
public:
  void saySomething() {
    if(this->energy>0)
      cout << "MEOW\n" ;
    else
      cout << "cat is dead";
  }
};

int main(void) {
  Mouse lom;
  Cat cherry;
  cherry.saySomething();
  lom.setWeight(10);
  cherry.setWeight(40);

  Animal->action(lom, cherry);
  return 0;
}