#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define F first
#define S second
#define pii pair<int, int>
#define eb emplace_back
#define all(v) v.begin(), v.end()
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define rep3(i, l, n) for (int i = l; i < (n); ++i)
#define sz(v) (int)v.size()
const int inf = 1e9 + 7;
const ll INF = 1e18;
#define abs(x) (x >= 0 ? x : -(x))
#define lb(v, x) (int)(lower_bound(all(v), x) - v.begin())
#define ub(v, x) (int)(upper_bound(all(v), x) - v.begin())
template<typename T1, typename T2> inline bool chmin(T1 &a, T2 b) { if (a > b) { a = b; return 1; } return 0; }
template<typename T1, typename T2> inline bool chmax(T1 &a, T2 b) { if (a < b) { a = b; return 1; } return 0; }
template<typename T> T gcd(T a, T b) { if (b == 0) return a; return gcd(b, a % b); }
template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }
template<typename T> T pow(T a, int b) { return b ? pow(a * a, b / 2) * (b % 2 ? a : 1) : 1; }
const int mod = 1000000007;
ll modpow(ll a, int b) { return b ? modpow(a * a % mod, b / 2) * (b % 2 ? a : 1) % mod : 1; }
template<class T> ostream& operator<<(ostream& os, const vector<T>& vec) { for (auto &vi: vec) os << vi << " "; return os; }
template<class T, class U> ostream& operator<<(ostream& os, const pair<T, U>& p) { os << p.F << " " << p.S; return os; }
template<class T> inline void add(T &a, int b) { a += b; if (a >= mod) a -= mod; }



void solve();

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);

    int T;
    // cin >> T;
    T = 1;

    while (T--) {
        solve();
    }
}


void solve() {
    int n;
    cin >> n;
    vector<int> a(n);
    rep(i, n) cin >> a[i];
    using pil = pair<int, ll>;
    vector<vector<pil> > v;
    vector<int> lis;

    rep(i, n) {
        int it = lb(lis, a[i]);
        if (it == sz(lis)) {
            // v.eb?
            ll sum = 0;
            if (sz(v)) {
                for (pil p : v[sz(v) - 1]) {
                    if (p.F <= a[i]) sum += p.S;
                }
            } else sum = 1;

            vector<pil> tmp;
            tmp.eb(a[i], sum);
            v.eb(tmp);
            lis.eb(a[i]);
        } else {
            ll sum = 0;
            if (it >= 1) {
                for (pil p : v[it - 1]) {
                    if (p.F < a[i]) sum += p.S; // debuged, <= to <
                }
            } else sum = 1;

            v[it].eb(a[i], sum);
            lis[it] = a[i];
        }
    }
    ll ans = 0;
    for (pil p : v[sz(v) - 1]) {
        ans += p.S;
    }
    /*
    rep(i, sz(v)) {
      cout << endl;
      rep(j, sz(v[i])) cout << v[i][j] << endl;
    }
    */
    cout << ans << endl;
}