# this code inputs from the user a series of grades
# and outputs the number of students whose grades exceeded the average

# because we need at least two passes over the grades
# we would like to store them in the program
# below we use a list to store the grades

num = int(input("how many grades ? "))

# first get the numbers

# option 1
grades = []
for i in range(0,num):
    grades.append(int(input()))

# option 2
##grades = [0] * num
##for i in range(0,num):
##    grades[i] = int(input("enter a grade: "))

# then compute the average

mean = sum(grades)/num
print("mean grade is",mean)

# finally sum the students who exceeded it

# option 1: use a loops
count = 0
for g in grades:
    if mean<g:
        count+=1        

# option 2: use list comprehension
##tmp = ["avigdor" for g in grades if mean<g]
##count = len(tmp)

# option 3: again, use list comprehension
# we don't recommend summing up booleans
# but this is still an interesting example
##tmp = [mean<g for g in grades]
##count = sum(tmp)

print(count,"students exceeded mean grade")

# another thing to try out:
# how would you input the grades from the user
# using list comprehension (instead of a loop) ?