#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main(){
    int n;
    cin >> n;
    vector<int>a(n);
    rep(i,n)cin >> a[i];
    ll cnt=0;
    rep(i,n-1){
        if(a[i]>a[i+1])cnt++;
    }
    ll ans=0;
    rep(i,n-1){
        if(a[i]>a[i+1])cnt--;
        else ans+=cnt;
    }
    cout << ans << endl;
    return 0;
}