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

int main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    
    ll N; cin >> N;
    vector<int> A(N);
    rep(i,N) cin >> A[i];
    vector<pair<int,int>> v;
    v.push_back({A[0], 1});
    for(int i = 1; i < N; i++) {
        if(v.back().first == A[i]) 
            v.back().second++;
        else
            v.push_back({A[i], 1});
    }

    ll ans = N * (N + 1) / 2;
    for(auto [x, c] : v) {
        if(x == 1) ans -= 1LL * c * (c + 1) / 2;
    }
    cout << ans << endl;
}