#
# demo.py
#
# (put stuff for author etc here)

from math import sqrt

def main():
    numbers = input("What is the list of numbers? ")
    total = 0
    count = 0
    for n in numbers:
        total = total + n
        count = count + 1
    print "The total is ", total
    average = float(total)/count
    print "The average is", average
    # OK, now find the standard deviation
    total = 0
    for n in numbers:
        total = total + (n - average)**2
    variance = total/count
    standard_deviation = sqrt(variance)
    print "The standard deviation is ", standard_deviation

main()