package p;
import java.util.ArrayList;
import java.util.Comparator;
class A {
ArrayList<? super A> fSink;
}
class U extends ArrayList<A> {
public boolean add(A arg0) {
return false;
}
}
class V<Q extends A> implements Comparator<Q> {
public int compare(Q arg0, Q arg1) {
return 0;
}
}