摘要：
Common Substrings Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 11469 Accepted: 3796 Description A substring of a string T is defined as: 阅读全文
摘要：
Life Forms Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 16223 Accepted: 4763 Description You may have wondered why most extraterrestrial 阅读全文