#include <iostream>
using namespace std;

int main() {

  int t;
  cin >> t;

  while (t > 0) {

    int n;
    cin >> n;

    int arr[n];
    int count = 0;
    int flag = 0;

    for (int i = 0; i < n; i++) {

      cin >> arr[i];
      if (arr[i] == 0) {
        flag = 1;
      }

      if (arr[i] < 0) {
        count++;
      }
    }

    if (count % 2 == 0 || flag != 0) {
      cout << "0" << endl;
    } else {
      cout << (count % 2) << endl;
    }
    t--;
  }

  return 0;
}