| ||||||||||
| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest | |||||||||
Re:AC 了 110ms~In Reply To:AC 了 110ms~ Posted by:810974380 at 2009-08-25 15:54:46 我的代码,390ms
#include <iostream>
#include <cstring>
#include <fstream>
using namespace std;
int p[40000],a[40000],n,len;
void binary_search(int k)
{
int left=1,right=len,mid=0;
while(left<=right) 因为开始这里条件写成了while(left!=left),出现了 left=1,right=0 的情况,死循环,狂TLE>_<…… 欲哭无泪……
{
mid=(right+left)/2;
if(k>a[mid])
left=mid+1;
else
right=mid-1;
}
if(a[left]>k)
a[left]=k;
else
a[left+1]=k;
}
int main()
{
int t;
cin>>t;
while(t--)
{
cin>>n;
for(int i=1;i<=n;i++)
cin>>p[i];
memset(a,0,sizeof(a));
len=1;
a[1]=p[1];
for(int i=2;i<=n;i++)
{
if(p[i]<a[len])
{
binary_search(p[i]);
}
else
{
len++;
a[len]=p[i];
}
}
cout<<len<<endl;
}
return 0;
}
Followed by: Post your reply here: |
All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator