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

int main() {
  int n;
  cin >> n;
  vector<int> v(n);
  for (int i = 0; i < n; ++i) {
    cin >> v[i];
  }
  long long l = 0, r = 0;
  long long count = 0;
  set<int> st;
  while (r < n) {
    while (st.count(v[r])) {
      st.erase(v[l]);
      l++;
    }
    st.insert(v[r]);
    count += (r - l + 1);
    r++;
  }
  cout << count;
}