摘要: #include #include #include using namespace std; const int maxn = 1000 + 5; // at most 1000 lowercase characters // union find set, each set is a tree // only letters 'a' through 'z' will appear... 阅读全文
posted @ 2018-01-20 23:51 PatrickZhou 阅读(110) 评论(0) 推荐(0) 编辑