Codio (python) Challenge

X factorial, also written as X!, is X*(X-1) * (X-2) * (X-3).........* (1)

So, 4! is 4*3*2*1 = 24

We provide you with a value N. Calculate N! and output only the final result.

#Get N from the command line

import sys

N = int(sys.argv[1])

#your code goes here.