#include<iostream>
#include<cstdio>
#define ull unsigned long long
using namespace std;
ull arr[30001],n;
//ull tmp[4];
ull ans;
void dfs(int wh,int pos){
	if(wh==4){
		++ans;
		//for(int i=0;i<4;++i)cout<<tmp[i]<<' ';
	//	cout<<endl<<arr[pos]<<endl;
		return;
	}
	for(int i=pos+1;i<=n-2+wh;++i){
		if(arr[pos]<arr[i]){
			//tmp[wh]=arr[i];
			dfs(wh+1,i);
		}	
	}
	return;
}
int main(){
	freopen("three.in","r",stdin);
	freopen("three.out","w",stdout);
	cin>>n;
	for(int i=1;i<=n;++i){
		cin>>arr[i];
		//cout<<arr[i]<<endl;
	}
	dfs(1,0);
//	for(int i=1;i<=n-2;++i)dfs(1,i);
	cout<<ans<<endl;
	return 0;
}