摘要：
Problem Description You are given a number of case-sensitive strings of alphabetic characters, find the largest string X, such that either X, or its i 阅读全文
摘要：
Problem Description Clairewd is a member of FBI. After several years concealing in BUPT, she intercepted some important messages and she was preparing 阅读全文
摘要：
Problem Description It is well known that AekdyCoin is good at string problems as well as number theory problems. When given a string s, we can write 阅读全文
摘要：
Description The Genographic Project is a research partnership between IBM and The National Geographic Society that is analyzing DNA from hundreds of t 阅读全文