#include <bits/stdc++.h>
using namespace std;

int main() {
    int N;
    cin >> N;
    vector<int>A(N);
    vector<int>B;
    for(int i = 0; i < N; i++) {
        cin >> A[i];
        if(i) {
            if(A[i-1] < A[i]) {
                B.push_back(0);
            }
            else {
                B.push_back(1);
            }
        }
    }
    long long ans = 0,cnt = 0;
    for(int i = 0; i < N-1; i++) {
        if(B[i] == 1) {
            ans += i-cnt;
            cnt++;
        }
    }
    cout << ans << endl;
}