题解 | #记负均正#
记负均正
https://www.nowcoder.com/practice/6abde6ffcc354ea1a8333836bd6876b8
while True:
try:
n = int(input())
m1 = list(map(int, input().split()))
m2 = [i for i in m1 if i < 0]
m3 = [i for i in m1 if i > 0]
if m3 == []:
print(len(m2) , 0.0)
else:
print(len(m2) , round((sum(m3) / len(m3)),1))
except:
break
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