编程介的小学生 2017-04-22 04:14 采纳率: 20.5%
浏览 703
已采纳

Frugal Search

For this problem you will write a search engine that takes a query, searches a collection of words, and finds the lexicographically smallest word that matches the query (i.e., the matching word that would appear first in an English dictionary). A query is a sequence of one or more terms separated by single vertical bars ("|"). A term is one or more letters followed by zero or more signed letters. A signed letter is either +s ("positive" s) or -s ("negative" s), where s is a single letter. All letters are lowercase, and no letter will appear more than once within a term. A query will not contain spaces. A term matches a word if the word contains at least one of the unsigned letters, all of the positive letters, and none of the negative letters; a query matches a word if at least one of its terms matches the word.

Input: The input consists of one or more test cases followed by a line containing only "#" that signals the end of the input. Each test case consists of 1–100 words, each on a line by itself, followed by a line containing only "*" that marks the end of the word list, followed by one or more queries, each on a line by itself, followed by a line containing only "**" that marks the end of the test case. Each word will consist of 1–20 lowercase letters. All words within a test case will be unique. Each query will be as defined above and will be 1–79 characters long.

Output: For each query, output a single line containing the lexicographically smallest word within that test case that matches the query, or the word NONE if there is no matching word. At the end of each test case, output a dollar sign on a line by itself.

Example input: Example output:
elk
cow
bat
*
ea
acm+e
nm+o|jk+l
**
debian
slackware
gentoo
ubuntu
suse
fedora
mepis
*
yts
cab-e+n
r-e|zjq|i+t|vs-p+e-u-c
**
#
bat
NONE
elk
$
gentoo
ubuntu
NONE
$

  • 写回答

1条回答 默认 最新

  • threenewbee 2017-05-06 15:53
    关注
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥15 安卓adb backup备份应用数据失败
  • ¥15 eclipse运行项目时遇到的问题
  • ¥15 关于#c##的问题:最近需要用CAT工具Trados进行一些开发
  • ¥15 南大pa1 小游戏没有界面,并且报了如下错误,尝试过换显卡驱动,但是好像不行
  • ¥15 没有证书,nginx怎么反向代理到只能接受https的公网网站
  • ¥50 成都蓉城足球俱乐部小程序抢票
  • ¥15 yolov7训练自己的数据集
  • ¥15 esp8266与51单片机连接问题(标签-单片机|关键词-串口)(相关搜索:51单片机|单片机|测试代码)
  • ¥15 电力市场出清matlab yalmip kkt 双层优化问题
  • ¥30 ros小车路径规划实现不了,如何解决?(操作系统-ubuntu)