#include<bits/stdc++.h>
using namespace std;
int n,a[200005],t[200005],t2[200005],ans;
int main(){
    freopen("charger.in","r",stdin);
    freopen("charger.out","w",stdout);
    scanf("%d",&n);
    for (int i=1;i<=n;i++){
        scanf("%d",&a[i]);
    }
    for (int i=1;i<=n;i++){
        memset(t,0,sizeof(t));
        memset(t2,0,sizeof(t2));
        t2[a[i]]=1;
        for (int j=i+1;j<=n;j++){
            if (!t[a[j]]&&!t2[a[j]]){
                ans++;
                //cout<<i<<" "<<j<<endl; 
                t[a[j]]=1;
            }else if (t2[a[j]]){
                break;
            }
        }
    }
    printf("%d",ans);
    return 0;
}