#Write a function process that has one parameter, number of students in 
#the class. The function reads the grade for each student, and finds 
#and returns the following: (1) average grade for all students;
#(2) number of students who got A (grade 95 and above)
#(3) number of students who passed the course (grade 60 and above)
#(4) average passing grade    

def process(num_students):
	total_all=0
	total_pass=0
	count_pass=0
	count_A=0

	for i in range(num_students):
		grade=int(input("enter grade "))
		total_all=total_all+grade
		if(grade>=60):
			count_pass+=1
			total_pass+=grade
			if(grade>=95):
				count_A+=1
	ave=total_all/num_students
	if(count_pass>0):
		ave_pass=total_pass/count_pass
	else:
		ave_pass=-1

	return (int)(ave), count_A, count_pass, (int)(ave_pass)

def main():
	num_students=int(input("enter number of students "))
	if(num_students>0):
		ave, count_A, count_pass, ave_pass=process(num_students)
		print("total ave", ave)
		if(count_A==0):
			print("nobody got A")
		else:
			print(count_A, "got A")
		if(count_pass==0):
			print("nobody passed the course")
		else:
			print(count_pass, "passed and their average is",ave_pass)
	else:
		print("no students in class")
main()