2015 年 8月 24 日随笔档案 - _fukua

2015年8月24日

CF 369C . Valera and Elections tree dfs 好题

摘要： C. Valera and ElectionsThe city Valera lives in is going to hold elections to the city Parliament.The city hasndistricts andn - 1bidirecti... 阅读全文

posted @ 2015-08-24 23:35 _fukua 阅读(325) 评论(0) 推荐(0)

CF 501C Misha and Forest 好题

摘要： C. Misha and ForestLet's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played... 阅读全文

posted @ 2015-08-24 15:56 _fukua 阅读(272) 评论(0) 推荐(0)