题解 | #记负均正#

while True:
    try:
        n = int(input())
        s = list(map(int,input().split()))
        k = 0
        k1 = 0
        opt = 0
        for i in s:
            if i > 0:
                k1 += 1
                opt += i
            if i < 0:
                k += 1
        if opt != 0:
            opt = round(float(opt/k1)*10)/10
        if opt == 0:
            opt = 0.0
        print(str(k) + ' ' + str(opt))
    except:
        break