#include <bits/stdc++.h>  // clang-format off
using namespace std;
using Int = long long;
#define REP2(i, n) for (Int i = 0, max_i = (n); i < max_i; i++)
#define REP3(i, a, b) for (Int i = (a), max_i = (b); i < max_i; i++)
#define OVERLOAD2(_1, _2, _3, name, ...) name
#define REP(...) OVERLOAD2(__VA_ARGS__, REP3, REP2)(__VA_ARGS__)
struct SetupIO { SetupIO() { cin.tie(nullptr), ios::sync_with_stdio(false), cout << fixed << setprecision(13); } } setup_io;
#ifndef _MY_DEBUG
#define dump(...)
#endif  // clang-format on

/**
 *    author:  knshnb
 *    created: Fri Feb 14 23:02:23 JST 2020
 **/

using pii = pair<Int, Int>;
signed main() {
    Int n;
    cin >> n;
    vector<Int> a(n);
    REP(i, n) cin >> a[i];
    vector<Int> dp(n, 1e18);
    vector<vector<pii>> g(n);
    for (Int x : a) {
        Int j = lower_bound(dp.begin(), dp.end(), x) - dp.begin();
        dp[j] = x;
        Int cnt = 0;
        if (j > 0) {
            auto it = upper_bound(g[j - 1].begin(), g[j - 1].end(), pii(-x, 1e10));
            Int minus = it == g[j - 1].begin() ? 0 : prev(it)->second;
            int plus = g[j - 1].empty() ? 0 : g[j - 1].back().second;
            cnt += plus - minus;
        } else {
            cnt = 1;
        }
        Int prv = g[j].empty() ? 0 : g[j].back().second;
        g[j].push_back({-x, cnt + prv});
    }
    Int idx = lower_bound(dp.begin(), dp.end(), 1e18) - dp.begin();
    cout << g[idx - 1].back().second << endl;
}