/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
class Animal {
void sound() {
}
}
class Dog extends Animal {
void sound() {
}
}
class Cat extends Animal {
void sound() {
}
}
public class Main {
public static void main
(String[] args
) { Animal myDog = new Dog();
Animal myCat = new Cat();
myDog.sound();
myCat.sound();
}
}
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