#include <bits/stdc++.h>
#include <chrono>
#define ll long long int
#define endl '\n'
#define vn vector<ll>
#define vi vector<pair <ll,ll>>
using namespace std;
using namespace std::chrono;
const ll INF = 0x3f3f3f3f3f3f3f;
#define pb push_back
#define srt(vp) sort(vp.begin(), vp.end())
#define pii pair<ll,ll>
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
auto start = high_resolution_clock::now();
ll n;
cin >> n;
vn v(n+1);
for (int i = 1; i <= n; i++) cin >> v[i];
ll ans = 0;
for (int i = 2; i < n; i++) {
ll num1 = 0, num2 = 0;
for (int j = 1;j<i;j++){
if (v[j]<v[i])num1++;
}
for (int j=i+1;j<=n;j++){
if (v[j]<v[i])num2++;
}
ans += num1*num2;
}
cout << ans << endl;
auto stop = high_resolution_clock::now();
auto duration = duration_cast<microseconds>(stop - start);
// cout << "Time taken by function: " << duration.count() << " microseconds" << endl;
return 0;
}
