摘要：trie树+奇妙的数据结构想法 阅读全文

摘要：trie树+树上贪心 阅读全文

摘要：Problem strcmp() is a library function in C/C++ which compares two strings. It takes two strings as input parameter and decides which one is lexicogra 阅读全文

摘要：Neal is very curious about combinatorial problems, and now here comes a problem about words. Knowing that Ray has a photographic memory and this may n 阅读全文