2016年2月17日
codeforces622E Ants in Leaves (dfs)
摘要： DescriptionTree is a connected graph without cycles. A leaf of a tree is any vertex connected with exactly one other vertex.You are gi... 阅读全文
posted @ 2016-02-17 22:02 Herumw 阅读(157) 评论(0) 推荐(0) 编辑