round 函数真好用 
num = input()
num_list = [int(i) for i in input().split(' ')]
count = 0
over_list = []
for number in num_list:
    if number<0:
        count += 1
    elif number > 0:
        over_list.append(number)
if len(over_list) == 0:
    print(count,0.0)
else:
    print(count,round(sum(over_list)/len(over_list),1))