题解 | #记负均正#

a = int(input())
b, *args = map(int, input().split())
list1 = [b, *args]
list2 = []
list3 = []
for i in list1:
    if i < 0:
        list2.append(i)
cc = len(list2)
for j in list1:
    if j > 0:
        list3.append(j)
ss = sum(list3)
ll = len(list3)
if ss !=0:
    print(cc,round(ss/ll,1))
else:
    print(cc,0.0)