ZOJ 2136 Longest Ordered Subsequence 

 1 #include<time.h>
 2 #include <cstdio>  
 3 #include <iostream>  
 4 #include<algorithm>
 5 #include<math.h> 
 6 #include <string.h>  
 7 #include<vector> 
 8 #include<queue>
 9 using namespace std;
10 
11 int d[100005],a[100005];
12 int len,i,k,n,m;
13 
14 int binary(int t)
15 {
16     int low,high,mid;
17     low=0;
18     high=len;
19     while(low<high)
20     {
　　　　　　 //mid=low+(high-low)*(num-p[low])/(p[high]-p[low]);//插值排序
21         mid=(low+high)/2;
22         if(d[mid]<=t)
23             low=mid+1;
24         else
25             high=mid;
26     }
27     return low;
28 }
29 
30 int main()
31 {
32     int cas;
33     cin>>cas;
34     while(cas--)
35     {
36         cin>>n;
37         for(i=1;i<=n;i++)
38             cin>>a[i];
39         len=0;
40         d[0]=-99999;
41         for(i=1;i<=n;i++)
42         {
43             if(a[i]>d[len])
44             {
45                 len++;
46                 d[len]=a[i];
47                 //cout<<d[len]<<" ";
48             }
49             else
50             {
51                 k=binary(a[i]);
52                 d[k]=a[i];
53             }
54         }
55         cout<<len<<endl;
56         if(cas)                //这里是个坑 
57             cout<<endl;
58     }
59     return 0;
60 }

 

posted @ 2016-04-19 20:49  pter  阅读(176)  评论(0)    收藏  举报