#Write a program that reads a number of courses student 
#takes during 
#Academic year and the final grade for each course, 
#and finds the average final grade for the academic year. 

n = int(input("enter number of courses "))

if(n>0):
	i=0
	sum=0
	while(i<n):
		print("processing student", i+1)
		grade=int(input("enter grade "))
		sum=sum+grade
		i=i+1
	print("average grade", sum/n)
else:
	print("didn't take any courses")