题解 | #记负均正#
记负均正
https://www.nowcoder.com/practice/6abde6ffcc354ea1a8333836bd6876b8
n = input()
n_list = map(int,input().split())
count_negative = 0
count_positive = 0
average = 0
sum = 0
for i in n_list:
if i < 0:
count_negative += 1
if i > 0:
sum += i
count_positive += 1
try:
average = sum / count_positive
except:
average = 0
print("%d %.1f"%(count_negative,average))
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