#include <bits/stdc++.h>

using namespace std;

int main() {
    int N;
    cin >> N;
    
    vector<long long> A(N), b(N - 1);
    
    for (int i = 0; i < N; i++) {
        cin >> A[i];

        if (i) {
            if (A[i - 1] < A[i]) b[i - 1] = 1;
            else b[i - 1] = 0;
        }
    }

    long long ans = 0;
    int ones = 0;

    for (int i = 0; i < N - 1; i++) {
        if (b[i]) ++ones;
        else ans += ones;
    }

    cout << ans << endl;

    return 0;
}