最近在刷巨巨们放出来的专题,然后没做几题就卡住了,果然还是太弱了T U T... 这次做到了一题01分数规划求解的生成树问题。 题目大意是这样的:给你一个无向完全图,每条边i都有两个权值,长度a[ i ],花费b[ i ],需要选出其中的一些边构造一颗生成树,生成树需要满足条件:∑ b [ i ] / ∑ a [ i ]最小。 这样我还是先来介绍一下01分数规划吧~ 给定一个上述的问
http://acm.hdu.edu.cn/showproblem.php?pid=3861 The King’s Problem Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 1828 Accepted Submission
Lesson 73 The way to King Street 词汇 week n. 周 = 7 days 相关:weekend 周末 weekday 工作日 weekly adv. 一周一次的 = once a week 例句:一周有七天。 There are seven days in a week. days of the week: Monday 星期一 T
Little Petya is learning to play chess. He has already learned how to move a king, a rook and a bishop. Let us remind you the rules of moving chess pieces. A chessboard is 64 square fields org
Rook, Bishop and King 题面翻译 【题目描述】 佩蒂亚正在学习国际象棋。他已经学会如何移动王、车和象。让我们提示你如何移动国象棋子。棋盘有 64 64 64个棋格,呈 8 × 8 8\times8 8×8正方形。一个格子可以用 ( r , c ) (r,c) (r,c)来表示—— r r r指行, c c c指列(虽然在经典棋局中用字母和数字一起表示)。每一个棋子占用一个
WordPress最初的开发者Alex King在与癌症斗争2年半后在家去世。 Alex King对WordPress生态产生了重要影响,他是b2(可以看成是WordPress的前身)转到Wordpress的少数参与者之一,他帮助建设了第一个WordPress.com VIP客户的网站,他成立了第一个围绕WordPress的咨询机构,对WordPress功能和发展有着重大影响。 Alex
题目: David the Great has just become the king of a desert country. To win the respect of his people, he decided to build channels all over his country to bring water to every village. Villages which a
原题链接:E. Nastya and King-Shamans 题目大意: 给出一个长度为 n n n 的非负整数数组 a a a,设 s i s_{i} si 为 a a a 的前 i i i 项前缀和: s i = ∑ i = 1 i a i s_{i}=\sum_{i=1}^{i}a_{i} si=∑i=1iai 。 给出 q q q 次询问,格式为 p
K King of the Waves You are organising a king of the hill tournament, the Buenos AiresPaddleboarding Competition (BAPC), with n participants. In aking of the hill tournament, one person starts as
King Escape 传送门 Alice and Bob are playing chess on a huge chessboard with dimensions n × n n \times n n×n. Alice has a single piece left — a queen, located at ( a x , a y ) (a_x, a_y) (ax,ay), w