#include <iostream>

using namespace std;

class Animal
{
public:
    Animal() {cout << "111" <<endl;}
    virtual void perform() = 0;
};

class Dol:public Animal
{
public:
    Dol() {}
    void perform(){
        cout << "海豚" << endl;
    }
};

class Monkey:public Animal
{
public:
    Monkey() {}
    void perform(){
        cout << "猴子" << endl;
    }
};

class Explain:public Dol, public Monkey
{
    string name;
public:
    Explain(){}
};

int main()
{
    Explain e;
    Monkey *p = &e;
    p->perform();
    Dol *q = &e;
    q->perform();
    return 0;
}