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

constexpr long long inf = 1e18;

int main() {
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  int tt;
  cin >> tt;
  while (tt--) {
    int a, b, c;
    cin >> a >> b >> c;
    long long res = inf;
    for (int _ = 2; _--; ) {
      if (a >= 2 and c >= 3) {
        long long crr = max(a - c + 1, 0) + max(b - min(c - 1, a) + 1, 0);
        res = min(res, crr);
      }
      if (a >= 2 and b >= 3) {
        long long crr = max(a - b + 1, 0) + max(c - min(b - 1, a) + 1, 0);
        res = min(res, crr);
      }
      swap(a, c);
    }
    cout << (res < inf ? res : -1) << '\n';
  }
}