#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001



int main() {
	
	int n;
	cin>>n;
	vector<long long> a(n);
	rep(i,n)cin>>a[i];
	
	vector<int> b;
	rep(i,n-1){
		if(a[i]<a[i+1])b.push_back(1);
		else b.push_back(0);
	}
	
	long long ans = 0;
	long long c = 0;
	rep(i,b.size()){
		if(b[i]==1)c++;
		else ans += c;
	}
	cout<<ans<<endl;
	
    return 0;
}