题解 | #记负均正#

import sys


#from numpy import average
#for line in sys.stdin:
#    a = line.split()
#   print(int(a[0]) + int(a[1]))

n=input()
number = input().split()


#定义一个球平均数的函数
def MyAverage(L):
    sum =0
    length=len(L)
    if length==0:
        average=float(0)
        return average
    for x in L:
        sum+=x
	#平均数的结果用('%.1f')%float(sum/length)取一位小数
    average=('%.1f')%float(sum/length)
    return average

#将正数和负数放到俩个列表，将列表中的元素转化为In型
def count(number):
    func = lambda x: int(x)
    number = map(func, number)
    L1=[]
    L2=[]
    for x in number:
        if x>0:
            L1.append(x)
        elif x<0:
            L2.append(x)
        
        else:
            pass
    average=MyAverage(L1)
    print(len(L2),average)
    return 0

    






count(number)