#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  long long t;
  cin >> t;
  while (t--) {
    long long n;
    cin >> n;
    vector<long long> a(n);
    long long sum = 0;
    for (int i = 0; i < n; i++) {
      cin >> a[i];
      sum += a[i];
    }
    if (sum % n == 0)
      cout << "0" << endl;
    else
      cout << "1" << endl;
  }
}
