#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int t;
  cin >> t;
  while (t--) {
    int a, b, c;
    cin >> a >> b >> c;
    int mini = min(a, min(b, c));
    int maxi = max(a, max(b, c));
    if (maxi == mini || maxi - mini == 1)
      cout << 0 << "\n";
    else
      cout << 2 * (maxi - 1 - mini - 1) << "\n";
  }
  return 0;
}
