D. Kefa and Dishes time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output When Kefa came to the restaurant and sat at a table, the waiter immediately brought him the menu. There were n dishes. Ke…

                        "Ray, Pass me the dishes!" Time Limit: 3000MS   Memory Limit: Unknown   64bit IO Format: %lld & %llu [Submit]   [Go Back]   [Status] Description   After doing Ray a great favor to collect sticks for Ray, Poor Neal bec…

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 needs exactly m dishes. But at that, he doesn't want to order the same dish twice to taste as many d…

题目链接: 题目 D. Kefa and Dishes time limit per test:2 seconds memory limit per test:256 megabytes 问题描述 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 needs exactly…

原题链接 Description After doing Ray a great favor to collect sticks for Ray, Poor Neal becomes very hungry. In returnfor Neal's help, Ray makes a great dinner for Neal. When it is time for dinner, Ray arranges all the dishes he makes in a single line (a…

"Ray, Pass me the dishes!" UVA - 1400 题意就是线段树区间子段最大和,线段树区间合并,但是这道题还要求输出最大和的子段的左右端点.要求字典序最小,要求左右端点尽量靠左. 比如: 3 3 3 -9 3 3 3 输出的是1 3,而不是1 7 3 3 3 -9 3 3 4 输出的是1 7,而不是5 7 大体意思就是这样. 有一个坑,我没读好题,输出Case是每一组样例输出一个,而不是每查询一次就输出一次Case... 其他没什么了.具体代码写了注释. 代码…

Kefa and Dishes Problem's Link Mean: 菜单上有n道菜,需要点m道.每道菜的美味值为ai. 有k个规则,每个规则:在吃完第xi道菜后接着吃yi可以多获得vi的美味值. 问:最多可以获得多少美味值? (1≤m≤n≤18,0≤k≤n∗(n−1)) analyse: 经典的状压DP. 由于最多18道菜,可用一个数s(s<=2^18)来唯一标识一种状态. 对于一个状态s,枚举两个位置i和j:i从已选择的菜中选定,j从未选择的菜中选定. 下一个状态ss的就是:吃完i后接着…

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 needs exactly m dishes. But at that, he doesn't want to order the same dish twice to taste as many dishes as pos…

UVA 1400 - "Ray, Pass me the dishes!" option=com_onlinejudge&Itemid=8&page=show_problem&category=501&problem=4146&mosmsg=Submission+received+with+ID+13958986" target="_blank" style="">题目链接 题意:给定一个序…

Background\text{Background}Background I've got that Luogu Dialy has been \text{I've got that Luogu Dialy has been }I've got that Luogu Dialy has been updated\text{updated}updated this morning.\text{ this morning.} this morning. So I decided to learn …