def func(lst):
    fs = [i for i in lst if i<0]
    zs = [i for i in lst if i>0]
    avg = sum(zs)/len(zs)
    print(len(fs),round(avg,1))
while 1:
    try:
        int(input())
        lst = [int(i) for i in input().split()]
        func(lst)
    except:
        break