题解 | 记负均正
记负均正
https://www.nowcoder.com/practice/6abde6ffcc354ea1a8333836bd6876b8
import sys
n = input()
nums = [int(_) for _ in input().split(" ")]
fu = 0
ping = 0.0
ping_count = 0
for _ in nums:
if _ < 0:
fu += 1
elif _ > 0:
ping += _
ping_count += 1
if not ping_count:
ping_count = 1
print(fu,round(ping*1.0/ping_count*1.0,11))
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