poj 1631 LIS

题目链接：http://poj.org/problem?id=1631

#include <cstdio>
#include <cstring>
#include <iostream>
#include <cmath>
#include <algorithm>
#include <queue>
#include <vector>
using namespace std;

const int maxe = 50000;
const int maxn = 40050;
const int INF  = 0x3f3f3f;

int main()
{
    //freopen("E:\\acm\\input.txt","r",stdin);

    int T;
    cin>>T;
    while(T--){
        int A[maxn];
        int g[maxn];
        //memset(dp,0,sizeof(dp));
        memset(g,0x3f,sizeof(g));
        int n;
        cin>>n;
        for(int i=1;i<=n;i++)    scanf("%d",&A[i]);
        int ans = 0;
        for(int i=1;i<=n;i++){
            int k = lower_bound(g+1,g+n,A[i]) - g;
            g[k] = A[i];
            //dp[i] = k;
            ans = max(ans,k);
        }
        printf("%d\n",ans);
    }
}