#Write a function facebook_time that doesn't have any parameters. The 
#function reads the number of hours each person spent on Facebook on one 
#day. The number of hours is a positive integer. First zero or negative 
#integer will terminate the input. The function finds and returns the 
#total number of hours spent on Facebook by all people and the number of people 
#who spent 4 hours or more on Facebook that day.

#Write main to test your function

#Optional: you can store data in one dimensional list, and then create 2 
#lists: one with 4 hours or more on Facebook, and one below 4 hours 

#Solution 1 without lists

def facebook_time():
	total=0
	c_above4=0
	hours=float(input("enter number of hours "))
	while(hours>0):
		total=total+hours
		if(hours>=4):
			c_above4=c_above4+1
		hours=float(input("enter number of hours "))
	return total, c_above4
def main():
	total, c_above4 = facebook_time()
	if(total==0):
		print("nobody used Facebook")
	else:
		print("total hours on Facebook", total)
		if(c_above4==0):
			print("nobody spent 4 hours or more")
		else:
			print(c_above4, "people spent 4 hours or more")
main()