#include <bits/stdc++.h>
using namespace std;
signed main() {
  int T;
  cin >> T;
  while (T-- > 0) {
    int n, x;
    cin >> n >> x;
    int cnt = 0;
    int sum = 0;
    for (int i = 0; i < n; ++i) {
      int val;
      cin >> val;
      cnt += (val == x);
      sum += val;
    }
    if (cnt == n) {
      cout << 0 << '\n';
    } else if (cnt > 0) {
      cout << 1 << '\n';
    } else if (sum == n * x) {
      cout << 1 << '\n';
    } else {
      cout << 2 << '\n';
    }
  }
  return 0;
}
