import java.util.HashSet;
import java.util.Set;

public class TRAI_25_X5_skeleton implements  TRAI_25_X5 {

    /**
     * SELF-EVALUATION HERE:
     *
     *
     *
     */
    /**
     * Find those elements that are in all of the sets of inAll,
     * are in at least one of the sets of inSome,
     * and are in none of the sets of inNone.
     * @param inAll     Set of sets, the result elements must be in all of these sets.
     * @param inSome    Set of sets, the result elements must be in at least one of these sets.
     * @param inNone    Set of sets, the result elements may not be in any of these sets.
     * @return          The set containing the elements fulfilling the above requirements.
     * @param <E>       Element type.
     */
    public <E> Set<E> inAllSomeNone(Set<Set<E>> inAll, Set<Set<E>> inSome, Set<Set<E>> inNone) {
        Set<E> result = new HashSet<>();

        // TODO
        return result;
    }

}