To store factorials of digits
fac = [ 0 for i in range ( 10 ) ] NEW_LINE fac [ 0 ] = 1 NEW_LINE fac [ 1 ] = 1 NEW_LINE for i in range ( 2 , 10 , 1 ) : NEW_LINE INDENT fac [ i ] = fac [ i - 1 ] * i NEW_LINE DEDENT