list1 = [] for i in range(3): x = [int(i) for i in input().split()] list1.append(x) y = int(input()) sum_list = [] for j in list1: sum_list.append(sum(j)) n = sum(sum_list) / len(sum_list) print("{:.2f}".format(n)) for _ in list1[y]: print(_, end=' ') print()