题解 | #记负均正#
记负均正
https://www.nowcoder.com/practice/6abde6ffcc354ea1a8333836bd6876b8
# 20241008
n = int(input())
ls = list(map(int,input().split()))
ls1 = []
ls2 = []
for i in ls:
if i > 0:
ls1.append(i)
elif i < 0:
ls2.append(i)
elif i == 0:
continue
if len(ls1) == 0:
print(len(ls2),0.0)
else:
avg = sum(ls1)/len(ls1)
print(len(ls2),round(avg,1))
