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

int main() {
    int N;
    long long a=1;
    cin>>N;
    vector<int> A(N);
    for(int i=0;i<N;i++){
        cin>>A[i];
    }
    vector<int> B(N+1,0);
    B[A[0]]++;
    for(int i=1;i<N;i++){
        if(A[i]!=A[i-1]){
            a+=i-B[A[i]];
        }
        B[A[i]]++;
    }
    cout<<a;
}

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