poj 2533 LIS

#include <cstdio>
#include <cstdlib>
#include <ctime>
#include <iostream>
#include <cmath>
#include <cstring>
#include <algorithm>
#include <stack>
#include <set>
#include <queue>
#include <vector>

using namespace std;

const int maxn = 1010;
const int INF = 0x7fffffff;
int dp[maxn];
int a[maxn];

int main()
{
    //freopen("in.txt", "r", stdin);

    int n;
    while(scanf("%d", &n) == 1)
    {
        for(int i = 0; i < n; i++)
            scanf("%d", &a[i]);

        fill(dp, dp + n, INF);

        for(int i = 0; i < n; i++)
            *lower_bound(dp, dp + n, a[i]) = a[i];

        printf("%d\n", lower_bound(dp, dp + n, INF) - dp);
    }

    return 0;
}