摘要：
http://poj.org/problem?id=2440DNATime Limit:1000MSMemory Limit:65536KTotal Submissions:3254Accepted:1285DescriptionA kind of virus has attacked the X planet, and many lives are infected. After weeks of study, The CHO (Creature Healthy Organization) of X planet finally finds out that this kind of vir 阅读全文
