博客
关于我
sdnu1172.Queue(双向LIS)
阅读量:286 次
发布时间:2019-03-01

本文共 1532 字,大约阅读时间需要 5 分钟。

Description

    On the PE,the teacher wants to choose some of n students to play games. Teacher asks n students stand in a line randomly(obviously,they have different height), then teacher tells someone to leave the queue(relative position is not change)to make the left students keep a special queue:

    Assuming that the left students’ numbers are 1, 2,……, m from left to right and their height are T1,T2,……,Tm. Then they satisfy T1<T2<......<Ti, Ti>Ti+1>……>Tm (1<=i<=m).
    Giving you the height of n students (from left to right), please calculate how many students left at most if you want to keep such a special queue.
 

Input

    The first line contains an integer n (2<=n<=1000) represents the number of students.

    The second line contains n integers Ti(150<=Ti<=200) separated by spaces, represent the height(cm) of student i.

Output

    One integer represents the number of the left students.

Sample Input

8186 180 150 183 199 130 190 180

Sample Output

5

n个学生,求满足身高左递增右递减的最长序列 可以没有递增部分或没有递减部分

正序 反序分别求一遍LIS,然后遍历每个点,正序+反序-1 即为结果 -1是因为该点会重复一次

#include 
using namespace std;int dp1[1005],dp2[1005],a[1005],b[1005];int main(){ int n; while(scanf("%d",&n)!=EOF) { memset(a,0,sizeof(a)); memset(b,0,sizeof(b)); for(int i=1;i<=n;i++) { scanf("%d",&a[i]); b[n-i+1]=a[i]; } memset(dp1,0,sizeof(dp1)); memset(dp2,0,sizeof(dp2)); dp1[1]=1; dp2[1]=1; for(int i=2;i<=n;i++) { dp1[i]=1; dp2[i]=1; for(int j=1;j

 

转载地址:http://ksio.baihongyu.com/

你可能感兴趣的文章
multiprocessing.Pool:map_async 和 imap 有什么区别?
查看>>
MySQL Connector/Net 句柄泄露
查看>>
multiprocessor(中)
查看>>
mysql CPU使用率过高的一次处理经历
查看>>
Multisim中555定时器使用技巧
查看>>
MySQL CRUD 数据表基础操作实战
查看>>
multisim变压器反馈式_穿过隔离栅供电:认识隔离式直流/ 直流偏置电源
查看>>
mysql csv import meets charset
查看>>
multivariate_normal TypeError: ufunc ‘add‘ output (typecode ‘O‘) could not be coerced to provided……
查看>>
MySQL DBA 数据库优化策略
查看>>
multi_index_container
查看>>
mutiplemap 总结
查看>>
MySQL Error Handling in Stored Procedures---转载
查看>>
MVC 区域功能
查看>>
MySQL FEDERATED 提示
查看>>
mysql generic安装_MySQL 5.6 Generic Binary安装与配置_MySQL
查看>>
Mysql group by
查看>>
MySQL I 有福啦,窗口函数大大提高了取数的效率!
查看>>
mysql id自动增长 初始值 Mysql重置auto_increment初始值
查看>>
MySQL in 太多过慢的 3 种解决方案
查看>>