http://rosalind.info/problems/iprb/
http://rosalind.info/problems/fib/
http://rosalind.info/problems/gc/
http://rosalind.info/problems/prot/
http://rosalind.info/problems/subs/
http://rosalind.info/problems/hamm/
http://rosalind.info/problems/iev/
http://rosalind.info/problems/fibd/