import java.util.ArrayList;

public class Test{
    public static void main(String[] args){
    ArrayList<Misc> aList = new ArrayList<Misc>();
        for (int i = 0; i < 10; i++){
            aList.add(new Misc1(i));
        }
        for (int i = 0; i < 10; i++){
            aList.add(new Misc(i));
        }

        for (int i = 0; i < aList.size(); i++){
            System.out.println(aList.get(i).out());
        }
    }

}

class Misc{
    String str;

    public Misc(int i){
        this.str = "meow"+i;
    }

    public String out(){
        return this.str;
    }
}

class Misc1 extends Misc{
    public Misc1(int i){
        super(i);
        this.str = "woof"+i;
    }
}