#Write a program that first reads the number of students in the class, then reads 
#the grade for each student. The program finds the average passing grade (grade 
#60 and above). 

size=int(input("enter numbers of students "))
i=1
sum_pass=0
count_pass=0

while(i<=size):
	grade=int(input("enter grade "))
	if(grade>=60):
		sum_pass=sum_pass+grade
		count_pass=count_pass+1
	i=i+1
if(count_pass>0):
	print("there are", count_pass, "students passed the course")
	print("average passing grade", sum_pass/count_pass)
else:
	print("no passing grades")