摘要: Description 某个国家有n个城市,这n个城市中任意两个都连通且有唯一一条路径,每条连通两个城市的道路的长度为zi(zi include include include include define N 300010 define ll long long using namespace s 阅读全文
posted @ 2018-03-24 15:13 void_f 阅读(141) 评论(0) 推荐(0) 编辑