题解 | #记负均正#
记负均正
https://www.nowcoder.com/practice/6abde6ffcc354ea1a8333836bd6876b8
n = int(input()) nums = map(int, input().split()) positive_sum = 0.0 positive_num = 0 negative_num = 0 for num in nums: if num < 0: negative_num += 1 elif num > 0: positive_sum += num positive_num += 1 if positive_num != 0: positive_avg = round(positive_sum / positive_num, 1) #保留一位小数 else: positive_avg = 0.0 print(negative_num, end=' ') print(positive_avg)