编程介的小学生 2019-01-15 18:41 采纳率: 20.5%
浏览 329
已采纳

计算第k大的数字,在序列中,采用一次遍历的算法,C语言

Problem Description
Now is spring ! The sunshine is warm , the flowers is coming out . How lovely it is! So my classmates and I want to go out for a spring-outing.

But we all select courses ourselves. We don't have classes at the same time.Now our monitor has a big trouble in arranging the time of the spring-outing.

Can you help him?

I will give you our courses information and the time of the spring-outing.You just need to tell me that who can't go with us.

Input
The first line contains an integer CA which indicates the number of test cases.
Then CA cases follow.
Each case contains two parts,the students' courses information and the query.

In the first part ,first there is an integer N(N<200) which means the number of the student,and then comes the N students’ courses information.
A student's courses information is in this format:

line1: name K
line2: day1 b1 e1
.....
lineK+1: dayK bK eK

The first line of a student's courses infomation contains his name(less than 20 characters and in lowercase) and the number(K,K<1000) of his courses . Then next K lines describe his courses. Each Line contain three integers indicate the day of a week( 1 <= day <= 7 means Monday to Sunday ), the begin time and the end time of the course.
To make the problem easier,the begin time and the end time will be in the range from 1 to 11 .(Because in HDU,there is 11 classes one day).

In the query part , first there is an integer Q which means the query number,and then Q lines follow.
A query contains three integers which means the day ,the begin time and the end time of the spring-outing.And the time is described as the courses.
Notice,everyone may have more than one course at the same time for some special reasons.

Output
For each query , just print the names of the students who can't go out for a spring-outing in a line in lexicographic order.
Please separate two names with a blank.
If all of the students have time to go , just print "None" in a line.

Sample Input
1
3
linle 3
1 1 2
2 3 4
3 8 10
laili 1
4 1 4
xhd 2
1 2 4
4 5 6
3
1 2 2
4 4 5
5 1 2

Sample Output
linle xhd
laili xhd
None

  • 写回答

1条回答 默认 最新

  • threenewbee 2020-01-07 01:23
    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 基于FOC驱动器,如何实现卡丁车下坡无阻力的遛坡的效果
  • ¥15 IAR程序莫名变量多重定义
  • ¥15 (标签-UDP|关键词-client)
  • ¥15 关于库卡officelite无法与虚拟机通讯的问题
  • ¥100 已有python代码,要求做成可执行程序,程序设计内容不多
  • ¥15 目标检测项目无法读取视频
  • ¥15 GEO datasets中基因芯片数据仅仅提供了normalized signal如何进行差异分析
  • ¥100 求采集电商背景音乐的方法
  • ¥15 数学建模竞赛求指导帮助
  • ¥15 STM32控制MAX7219问题求解答