题解 | #记负均正II#

li_zs = []
li_fs = []
while 1:
    try:
        n = int(input())
        if n>0:
            li_zs.append(n)
        else:
            li_fs.append(n)
    except:
        break

print(len(li_fs))
if len(li_zs)>0:
    num = sum(li_zs)/len(li_zs)
    print(round(num,1))
else:
    print(0.0)