Write a Python function called optimal_alignment_score. The definition
for this function is

def optimal_alignment_score(seq1, seq2, m, mm, g)

where seq1 and seq2 are unaligned DNA sequences, and m, mm, and g are the
match, mismatch, and gap costs respectively.

The pseudocode for the function is:

def optimal_alignment_score(seq1, seq2, m, mm, g):

	Allocate space for V and T
	Call the function computeVandT
	return the bottom rightmost entry of V

Submit hardcopy solution in class on Feb 15th.