题解 | #记负均正#
记负均正
https://www.nowcoder.com/practice/6abde6ffcc354ea1a8333836bd6876b8
n = int(input())
num_list = list(map(int,input().split()))
a = []
b = []
# 遍历整个列表
for i in num_list:
if i > 0:
a.append(i)
elif i < 0:
b.append(i)
if len(a) != 0:
print(len(b),round(sum(a) / len(a),1))
else:
print(len(b),0.0)
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