#Write a program that reads a sequence of non-zero integers. First zero value will 
#terminate the input. The program finds sum and average of the negative numbers. 
#Example: Input: 2 -5 6 7 -8 -9 0 Output: sum is -22 and average is -7.333333 
def main():
	my_list=[]
	num=int(input("non zero "))
	while(num!=0):
		my_list.append(num)
		num=int(input("non zero "))
	print("my list is")
	print(my_list)
	sum_neg=0
	count_neg=0
	size=len(my_list)
	for i in range(size):
		if(my_list[i]<0):
			count_neg+=1
			sum_neg+=my_list[i]
	if(count_neg>0):
		print(sum_neg, sum_neg/count_neg)
	else:
		print("no negative numbers")
main()