#include <fstream>
#include <algorithm>
using namespace std;

ifstream fin("scmax.in");
ofstream fout("scmax.out");

int n, dp[100005], before[100005], values[100005];
// dp[x] = pozitia numarului din vectorul initial (values) in care se termina subsirul crescator de lungime x

int main()
{
    fin >> n;
    for (int i = 1; i <= n; i++)
        fin >> values[i];
    int ans = 0;
    for (int i = 1; i <= n; i++)
    {
        int curent = values[i];
        // Putem lungi SCMax-ul
        if (dp[ans] < curent)
            dp[++ans] = curent;
        else
        {
            // Primul numar > curent, deci il inlocuim
            int poz = upper_bound(dp + 1, dp + 1 + ans, curent) - dp;
            dp[poz] = curent;
        }
    }
    fout << ans << "\n";
    return 0;
}