#Normal Method

numberList = []

print ("Enter all numbers with ',' as separator")

numberList = [int(i) for i in input().split(',')]

print ("Average = ",sum(numberList)/len(numberList))

#Statistics module

from statistics import mean

numberList = []

print ("Enter all numbers with ',' as separator")

numberList = [int(i) for i in input().split(',')]

print ("Average = ",mean(numberList))

#using reduce

from functools import reduce

numberList = []

print ("Enter all numbers with ',' as separator")

numberList = [int(i) for i in input().split(',')]

print ("Average = ",reduce(lambda x,y:x+y, numberList)/len(numberList))