摘要：
Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 35387 Accepted: 12816 Description A Bank plans to install a machine for cash withdrawal. Th 阅读全文
摘要：
Description It is well known that a human gene can be considered as a sequence, consisting of four nucleotides, which are simply denoted by four lette 阅读全文