students_scores = [] for _ in range(3): scores = list(map(int, input().split())) students_scores.append(scores) n = int(input()) total_scores = sum([sum(student_scores) for student_scores in students_scores]) average_score = total_scores / (3 * 4) print("%.2f" % average_score) print(" ".join(map(str, students_scores[n])))