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

void mainSolve()
{
    int n;
    cin >> n;
    vector<int> cnt(2, 0);
    for (int i = 0; i < n; i++)
    {
        int x;
        cin >> x;
        ++cnt[x];
    }
    if (cnt[1] >= cnt[0])
        cout << "1\n";
    else
        cout << "0\n";
}

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;
}