题解 | #记负均正#

import sys

for line in sys.stdin:
    a = int(line.strip())
    list1 = list(map(int,input().strip().split(" ")))
    list2,list3 = [],[]
    for i in list1:
        if i > 0 :
            list2.append(i)
        elif i < 0 :
            list3.append(i)
    if list2:
        avg = sum(list2)/len(list2)
    else:
        avg =0.0
    print(len(list3),round(avg,1))