while True: try: int_num = int(input()) num_list = input().split(" ") num_list_2 = num_list[:int_num] num_result_1 = 0 num_result_2 = 0 num_result = 0 for i in num_list_2: if int(i) < 0: num_result_1 += 1 elif int(i) > 0: num_result_2 += 1 num_result += int(i) print("%d %.2f" % (num_result_1, num_result/num_result_2)) except: break