14 lines
325 B
Python
14 lines
325 B
Python
''' n! means n * (n - 1) * ... * 3 * 2 * 1
|
|
For example, 10! = 10 * 9 * ... * 3 * 2 * 1 = 3628800,
|
|
and the sum of the digits in the number 10! is 3 + 6 + 2 + 8 + 8 + 0 + 0 = 27.
|
|
Find the sum of the digits in the number 100! '''
|
|
|
|
a = 1
|
|
sum = 0
|
|
for i in xrange(1, 101):
|
|
a *= i
|
|
while a > 0:
|
|
sum += a % 10
|
|
a /= 10
|
|
print sum
|