#include <bits/stdc++.h>
using namespace std ;

#define ff    first
#define ss    second
#define pb    push_back

typedef long long    ll;
typedef pair<ll,ll>    ii;
typedef long double    lf;


mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

const ll SQ = 320;
const ll N = 1502;
const ll mod = 1e9 + 7;
const ll oo = 1e18;

int main(){
  #ifdef LOCAL
  freopen("input.txt","r",stdin);
  #endif // LOCAL
  ios_base::sync_with_stdio(0);
  cin.tie(0);cout.tie(0);

  int t; cin >> t;
  while (t--) {
    int n; cin >> n;
    int par = 0, impar = 0;
    int mxdv = -1, mndv = 80;
    for (int i = 0; i < n; ++i) {
      ll x; cin >> x;
      if (x%2)impar=1;
      else par=1;

      int cur=0;
      while (x%2==0)x/=2, cur++;
      mxdv = max(mxdv, cur);
      mndv = min(mndv, cur);
    }
    if (impar == 0 && n % 2) {
      if (mxdv > mndv) cout << 1 << '\n';
      else cout << 0 << '\n';
    }
    else if (par) cout << 1 << '\n';
    else cout << 0 << '\n';
  }


  return 0;
}