Write a Python program that prints the score of a given alignment 
according the substitution score matrix given below and gap score
of -10. 

	A	C	G	T
A	10	1	-2	-1
C	1	11	2	0
G	-2	2	12	3
T	-1	0	3	9

For example if the input in the file dna.fasta is

>A
ACCGTAAC
>B
ATC---GG

then the program should output 10 + 0 + 11 - 10 - 10 - 10 - 2 + 2 =

-9

Submit a hardcopy in class on Oct 18th.