2016年5月3日
PKU 3013 Big Christmas Tree 最短路 spfa
摘要： 题意/Description： Christmas is coming to KCM city. Suby the loyal civilian in KCM city is preparing a big neat Christmas tree. The simple structure of t 阅读全文
posted @ 2016-05-03 20:02 猪都哭了 阅读(137) 评论(0) 推荐(0)
PKU 1860 Currency Exchange 最短路 bellman
摘要： 题意/Description： Several currency exchange points are working in our city. Let us suppose that each point specializes in two particular currencies and 阅读全文
posted @ 2016-05-03 19:54 猪都哭了 阅读(120) 评论(0) 推荐(0)