#include <iostream>
using namespace std;

Weedle* sonic();

class Weedle {
    Oddish& slayer(Oddish* p, Spearow& s);
};

class Oddish {
    bool slayer(Spearow* p);
};

class Spearow {
    Oddish sonic(Weedle& w);
};

class Charmeleon {
    void trainer(Spearow s);
};


int main() {
    //Date d;
    return 0;
}