题解 尝试做一下,感觉是每次取一段前缀和,这样就相当于让我们证明在 \(a_i\le 10^{12}\) 时,不可能构造出隔一个取一个的情况(\(n=10^5\)). a[i]: 1, 2, 3, 5, 6,11,12,23,24... s[i]: 1, 1, 4, 4,10,10,22,22,46... 可以发现他是成指数级增长的,所以必定不能构造出这样的数据,呕吼,好像可以做了. 我们就动态维护一下区间和,每次在这个东西上二分,按照我们上面的策略就可以了吧. 好像还需要吉老师线段树,骚啊~…

作者:supernova 出处:http://community.topcoder.com/tc?module=Static&d1=tutorials&d2=greedyAlg John Smith is in trouble! He is a TopCoder member and once he learned to master the "Force" of dynamic programming, he began solving problem after p…

Greedy Gift Givers A group of NP (2 ≤ NP ≤ 10) uniquely named friends has decided to exchange gifts of money. Each of these friends might or might not give some money to any or all of the other friends. Likewise, each friend might or might not receiv…

Shopping Time Limit: 1000MS Memory limit: 65536K 题目描述 Saya and Kudo go shopping together.You can assume the street as a straight line, while the shops are some points on the line.They park their car at the leftmost shop, visit all the shops from left…

http://acm.hdu.edu.cn/showproblem.php?pid=4976 2014 Multi-University Training Contest 10 1006 A simple greedy problem. Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 20    Accepted Submission(s…

Greedy Mouse 时间限制:1000 ms  |  内存限制:65535 KB 难度:3   描述 A fat mouse prepared M pounds of cat food,ready to trade with the cats guarding the warehouse containing his favorite food:peanut. The warehouse has N rooms.The ith room containsW[i] pounds of pea…

huffman coding, greedy algorithm. std::priority_queue, std::partition, when i use the three commented lines, excution time increase to 15ms from 0ms, due to worse locality? thanks to http://acm.hdu.edu.cn/discuss/problem/post/reply.php?action=support…

http://acm.sdut.edu.cn/sdutoj/problem.php?action=showproblem&problemid=2154 Shopping Time Limit: 1000ms   Memory limit: 65536K  有疑问?点这里^_^ 题目描述 Saya and Kudo go shopping together.You can assume the street as a straight line, while the shops are some…

Shopping Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 632 Accepted Submission(s): 209 Problem Description You have just moved into a new apartment and have a long list of items you need to buy…

eclipse中 启动tomcat时报Multiple Contexts have a path of "/shopping". 这个是由于你的server服务器中的server.xml文件 中关于同一个工程配置了多个<context></context>的原因,删除多余的就可以了. 不要把其他工程的也给删除了…