// #define NDEBUG

#define ce constexpr
#define tt template <typename T>
#define tt_ template <typename... T>
#define tn template <size_t N>
#define bs binary_search
#define ps partial_sum
#define ad adjacent_difference
#define rc reverse_copy
#define nthe nth_element
#define maxe max_element
#define mine min_element
#define np next_permutation
#define pp prev_permutation
#define mp make_pair
#define lb lower_bound
#define ub upper_bound
#define pb push_back
#define ppb pop_back
#define pf push_front
#define ppf pop_front
#define eb emplace_back
#define whole(x) (x).begin(), (x).end()
#define rwhole(x) (x).rbegin(), (x).rend()

#include <bits/stdc++.h>
// #include <bits/extc++.h>

using ll = long long;
using lll = __int128_t;
using ld = long double;
using uchar = unsigned char;
using ushort = unsigned short;
using uint = unsigned int;
using ull = unsigned long long;
using ulll = __uint128_t;
ce int mod9 = 998244353;
ce int mod10 = 1000000007;
ce int inf = 0x3f3f3f3f;
ce int neginf = 0xc0c0c0c0;
ce ll infll = 0x3f3f3f3f3f3f3f3f;
ce ll neginfll = 0xc0c0c0c0c0c0c0c0;
tt ce T &maxeq(T &a, const T &b) { return a < b ? (a = b) : a; }
tt ce T &mineq(T &a, const T &b) { return a > b ? (a = b) : a; }
ce int mylog(uint x) { return 31 - __builtin_clz(x); }
ce int mylogll(ull x) { return 63 - __builtin_clzll(x); }

using namespace std;
tt_ using vec = vector<T...>;
tt_ using mset = multiset<T...>;
tt_ using mmap = multimap<T...>;
tt_ using uset = unordered_set<T...>;
tt_ using umap = unordered_map<T...>;
tt_ using umset = unordered_multiset<T...>;
tt_ using ummap = unordered_multimap<T...>;
tt_ using pq = priority_queue<T...>;
tt_ using ii = istream_iterator<T...>;
tt_ using oi = ostream_iterator<T...>;
using pbb = pair<bool, bool>;
using pbi = pair<bool, int>;
using pbd = pair<bool, double>;
using pib = pair<int, bool>;
using pii = pair<int, int>;
using pid = pair<int, double>;
using pdb = pair<double, bool>;
using pdi = pair<double, int>;
using pdd = pair<double, double>;
using vb = vec<bool>;
using vbr = vb::reference;
using vbp = vb::pointer;
using vbt = vb::iterator;
using vbrt = vb::reverse_iterator;
using vvb = vec<vb>;
using vi = vec<int>;
using vit = vi::iterator;
using virt = vi::reverse_iterator;
using vvi = vec<vi>;
using vd = vec<double>;
using vdt = vd::iterator;
using vdrt = vd::reverse_iterator;
using vvd = vec<vd>;
using vpii = vec<pii>;
using vpiit = vpii::iterator;
using vpiirt = vpii::reverse_iterator;
using vvpii = vec<vpii>;
using vs = vec<string>;
using vst = vs::iterator;
using vsrt = vs::reverse_iterator;
using vvs = vec<vs>;
using gbool = greater<bool>;
using gint = greater<int>;
using gdouble = greater<double>;
using gpii = greater<pii>;
using gstring = greater<string>;
inline vbr operator^=(vbr a, const bool &b) { return a = a ^ b; }
inline vbr operator&=(vbr a, const bool &b) { return a = a && b; }
inline vbr operator|=(vbr a, const bool &b) { return a = a || b; }
tn inline bitset<N>::reference operator^=(typename bitset<N>::reference a, const bool &b) { return a = a ^ b; }
tn inline bitset<N>::reference operator&=(typename bitset<N>::reference a, const bool &b) { return a = a && b; }
tn inline bitset<N>::reference operator|=(typename bitset<N>::reference a, const bool &b) { return a = a || b; }
tn inline void swap(typename bitset<N>::reference a, typename bitset<N>::reference b)
{
    a ^= b;
    b ^= a;
    a ^= b;
}

// template <typename S, typename T>
// using rbtree = __gnu_pbds::tree<S, __gnu_pbds::null_type, T, __gnu_pbds::rb_tree_tag, __gnu_pbds::tree_order_statistics_node_update>;

#undef tt
#undef tt_
#undef tn

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t;
    cin >> t;
    while (t--)
    {
        int n;
        cin >> n;
        vi a(n);
        for (int &i : a)
            cin >> i;
        sort(whole(a));
        ll ans{};
        for (int i{};;)
        {
            int now{a[i]};
            while (i < n && a[i] == now)
                ++i;
            if (i == n)
                break;
            ans += i;
        }
        cout << ans << '\n';
    }
    return 0;
}