101498A - Watching Tv

using namespace std;
using ll = long long;
int main(void)
{
    ios::sync_with_stdio(false), cin.tie(NULL);
    int t;
    cin >> t;
    while (t--)
    {
        int n;
        cin >> n;
        map<int, int> counter;
        while (n--)
        {
            string s;
            int freq;
            cin >> s >> freq;
            counter[freq]++;
        }
        int ans = max_element(begin(counter), end(counter), [](auto a, auto b) {
                      if (a.second == b.second)
                          return a.first > b.first;
                      return a.second < b.second;
                  })->first;
        cout << ans << endl;
    }
    return 0;
}