题解 | #记负均正#

n = int(input())

nums = list(map(int, input().split(" ")))

neg = 0
act = 0
s = 0
for num in nums:
    if num < 0:
        neg += 1
    elif num > 0:
        act += 1
        s += num
print("{} {:.1f}".format(neg, s/act if act > 0 else 0))