#include <bits/stdc++.h>
using namespace std;
#define endl "\n"
#define pb push_back
#define int long long
#define fi first
#define se second
const int N = 3e5 + 5, M = 1e9 + 7, LG = 20;
int n , A[N];
void solve(){
cin >> n;
for (int i=1 ; i<=n ; i++){
cin >> A[i];
}
int ans = 0;
for (int i=1 ; i<=n ; i++){
set<pair<int,int>> st;
map<int,int> mp;
for (int j=i ; j>=1 ; j--){
st.erase({-mp[A[j]] , A[j]});
mp[A[j]]++;
st.insert({-mp[A[j]] , A[j]});
if (-(*(st.begin())).fi >= ((i-j+1)/2) + 1){
ans++;
}
}
}
cout << ans << endl;
}
signed main(){
// freopen("" , "r" , stdin);
// freopen("" , "w" , stdout);
// cout << setprecision(30);
ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int ts = 1;
// cin >> ts;
while(ts--){
solve();
}
}
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