摘要： All in AllTime Limit:1000MSMemory Limit:30000KTotal Submissions:21789Accepted:8668DescriptionYou have devised a new encryption technique which encodes a message by inserting between its characters randomly generated strings in a clever way. Because of pending patent issues we will not discuss in det 阅读全文

摘要： The SuspectsTime Limit:1000MSMemory Limit:20000KTotal Submissions:13843Accepted:6565DescriptionSevere acute respiratory syndrome (SARS), an atypical pneumonia of unknown aetiology, was recognized as a global threat in mid-March 2003. To minimize transmission to others, the best strategy is to separa 阅读全文

摘要： Blue JeansTime Limit:1000MSMemory Limit:65536KTotal Submissions:7333Accepted:3048DescriptionThe Genographic Project is a research partnership between IBM and The National Geographic Society that is analyzing DNA from hundreds of thousands of contributors to map how the Earth was populated. As an IB. 阅读全文