#include <bits/stdc++.h>
#define ll long long int
using namespace std;

void mainSolve()
{
    int n;
    cin >> n;
    vector<int> v(n);
    for (int i = 0; i < n; i++)
        cin >> v[i];
    unordered_map<int, int> m;
    for (int x : v)
        ++m[x];
    int count = 0;
    int ans = 1;
    for (auto it : m)
    {
        if (it.second >= count)
            count = it.second, ans = it.first;
    }
    int confusion = 0;
    for (auto it : m)
        if (it.second == count)
            ++confusion;
    if (confusion > 1)
        cout << "CONFUSED\n";
    else
        cout << ans << endl;
}

int main()
{
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
    int t;
    cin >> t;
    while (t--)
    {
        mainSolve();
    }
    return 0;
}