ljh_2000 - 博客园

2016年10月7日

摘要： Description There are n cities and m two-way roads in Berland, each road connects two cities. It is known that there is no more than one road connecti 阅读全文

posted @ 2016-10-07 21:34 ljh_2000 阅读(399) 评论(0) 推荐(0) 编辑

codeforces 723E：One-Way Reform

摘要： Description There are n cities and m two-way roads in Berland, each road connects two cities. It is known that there is no more than one road connecti 阅读全文

posted @ 2016-10-07 14:59 ljh_2000 阅读(318) 评论(0) 推荐(0) 编辑

2016年10月6日

codeforces 723D： Lakes in Berland

摘要： Description The map of Berland is a rectangle of the size n × m, which consists of cells of size 1 × 1. Each cell is either land or water. The map is 阅读全文

posted @ 2016-10-06 19:29 ljh_2000 阅读(537) 评论(0) 推荐(0) 编辑

codeforces 21D：Traveling Graph

摘要： Description You are given undirected weighted graph. Find the length of the shortest cycle which starts from the vertex 1 and passes throught all the 阅读全文

posted @ 2016-10-06 16:24 ljh_2000 阅读(344) 评论(0) 推荐(0) 编辑

codeforces 723C : Polycarp at the Radio

摘要： Description Polycarp is a music editor at the radio station. He received a playlist for tomorrow, that can be represented as a sequence a1, a2, ..., a 阅读全文

posted @ 2016-10-06 14:57 ljh_2000 阅读(228) 评论(0) 推荐(0) 编辑

codeforces 723B：Text Document Analysis

摘要： Description Modern text editors usually show some information regarding the document being edited. For example, the number of words, the number of pag 阅读全文

posted @ 2016-10-06 14:52 ljh_2000 阅读(410) 评论(0) 推荐(0) 编辑

codeforces 723A : The New Year: Meeting Friends

摘要： Description There are three friend living on the straight line Ox in Lineland. The first friend lives at the point x1, the second friend lives at the 阅读全文

posted @ 2016-10-06 14:36 ljh_2000 阅读(415) 评论(0) 推荐(0) 编辑

2016年10月5日

codeforces 580D：Kefa and Dishes

摘要： Description When Kefa came to the restaurant and sat at a table, the waiter immediately brought him the menu. There were n dishes. Kefa knows that he 阅读全文

posted @ 2016-10-05 22:46 ljh_2000 阅读(288) 评论(0) 推荐(0) 编辑

2016年10月4日

POJ1185 炮兵阵地

摘要：题目描述 Description 司令部的将军们打算在N × M的网格地图上部署他们的炮兵部队。一个N × M的地图由N行M列组成，地图的每一格可能是山地(用"H"表示)，也可能是平原(用"P"表示)，如下图。在每一格平原地形上最多可以布置一支炮兵部队 (山地上不能够部署炮兵部队)；一支炮兵部队在地阅读全文

posted @ 2016-10-04 17:04 ljh_2000 阅读(519) 评论(0) 推荐(0) 编辑

2016年10月2日

BZOJ1103 [POI2007]大都市meg

摘要： Description 在经济全球化浪潮的影响下,习惯于漫步在清晨的乡间小路的邮递员Blue Mary也开始骑着摩托车传递邮件了。不过，她经常回忆起以前在乡间漫步的情景。昔日，乡下有依次编号为1..n的n个小村庄，某些村庄之间有一些双向的土路。从每个村庄都恰好有一条路径到达村庄1（即比特堡）。并阅读全文

posted @ 2016-10-02 17:08 ljh_2000 阅读(281) 评论(0) 推荐(0) 编辑

ljh2000

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