def main():
x,y = 1,e[0]
x += y*e[1]
for i in e[2:]:
x,y = y,x
x += y*i
x,y = y,x
x += 2*y
print sum_of_digits(x)
def main():
total = 0
for i in range(1,101):
num = str(Decimal(i).sqrt())[:-5].replace(".","")
if len(num) == 100:
total += sum_of_digits(int(num))
print total
def main():
s = util.sum_of_digits(2**1000)
print "The sum of the digits of the number 2**1000 is: %d" % (s,)
def main():
sum_of_digits = util.sum_of_digits(math.factorial(100))
print "The sum of the digits in 100! is %d." % (sum_of_digits,)