Is It A Tree?(并查集)（dfs也可以解决）
摘要：
Is It A Tree?Time Limit:1000MSMemory Limit:10000KB64bit IO Format:%I64d & %I64uSubmitStatusDescriptionA tree is a well-known data structure that is ei... 阅读全文
posted @ 2015-07-17 08:47 若流芳千古 阅读(220) 评论(0) 推荐(0) 编辑
