#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<map>
#include<set>
#include<cstdio>
#include<cmath>
#include<numeric>
#include<queue>
#include<stack>
#include<cstring>
#include<limits>
#include<functional>
#include<unordered_set>
#include<iomanip>
#include<cassert>
#include<regex>
#include<bitset>
#include<complex>
#include<chrono>
#define rep(i,a) for(int i=(int)0;i<(int)a;++i)
#define pb push_back
#define eb emplace_back
using ll=long long;
constexpr ll mod = 1e9 + 7;
constexpr ll INF = 1LL << 60;
 
template<class T> inline bool chmin(T& a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
template<class T> inline bool chmax(T& a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}
 
using namespace std;
 
template <typename A, typename B>
string to_string(pair<A, B> p);
 
template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p);
 
template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p);
 
string to_string(const string& s) {
  return '"' + s + '"';
}
 
string to_string(const char* s) {
  return to_string((string) s);
}
 
string to_string(bool b) {
  return (b ? "true" : "false");
}
 
string to_string(vector<bool> v) {
  bool first = true;
  string res = "{";
  for (int i = 0; i < static_cast<int>(v.size()); i++) {
    if (!first) {
      res += ", ";
    }
    first = false;
    res += to_string(v[i]);
  }
  res += "}";
  return res;
}
 
template <size_t N>
string to_string(bitset<N> v) {
  string res = "";
  for (size_t i = 0; i < N; i++) {
    res += static_cast<char>('0' + v[i]);
  }
  return res;
}
 
template <typename A>
string to_string(A v) {
  bool first = true;
  string res = "{";
  for (const auto &x : v) {
    if (!first) {
      res += ", ";
    }
    first = false;
    res += to_string(x);
  }
  res += "}";
  return res;
}
 
template <typename A, typename B>
string to_string(pair<A, B> p) {
  return "(" + to_string(p.first) + ", " + to_string(p.second) + ")";
}
 
template <typename A, typename B, typename C>
string to_string(tuple<A, B, C> p) {
  return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " + to_string(get<2>(p)) + ")";
}
 
template <typename A, typename B, typename C, typename D>
string to_string(tuple<A, B, C, D> p) {
  return "(" + to_string(get<0>(p)) + ", " + to_string(get<1>(p)) + ", " + to_string(get<2>(p)) + ", " + to_string(get<3>(p)) + ")";
}
 
void debug_out() { cerr << "\n"; }
 
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
  cerr << " " <<to_string(H);
  debug_out(T...);
}
#ifdef LOCAL
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#else
#define debug(...) 42
#endif

void solve(){
  int t;
  cin>>t;
  while(t--){
    ll a,b,c;
    cin>>a>>b>>c;
    ll ans=INF;
    ll maxv=max({a,b,c}),minv=min({a,b,c}),mid=a+b+c-maxv-minv;
    if(a!=b&&b!=c&&c!=a){
      if(mid==a||mid==c)chmin(ans,0LL);
      else {
        if(maxv-mid>=mid-minv){
          ll bb=mid;
          bb-=mid-minv+1;
          if(bb>0)chmin(ans,mid-minv+1);
        }
        else {
          ll maxv2=maxv;
          maxv2-=maxv-mid+1;
          if(maxv2==minv)maxv2--;
          if(maxv2>0)chmin(ans,maxv-maxv2);
        }
      }
    }
    else {
      if(a==b&&b==c&&c==a){
        a-=2;c--;
        if(a>0)chmin(ans,3LL);
      }
      else if(a==c){
        if(b>a){
          if(a>1)chmin(ans,1LL);
        }
        else {
          a--;
          if(a>0){
            if(a==b){
              if(a>1)chmin(ans,2LL);
            }
            else chmin(ans,1LL);
          }
        }
      }
      else {
        if(b==c)swap(a,c);
        if(c>a){
          b--;
          if(b>0)chmin(ans,1LL);
        }
        else {
          a--;
          if(a==c){
            if(a>1)chmin(ans,2LL);
          }
          else chmin(ans,1LL);
        }
      }
    }
    if(ans==INF)cout<<-1<<"\n";
    else cout<<ans<<"\n";
  }
}
 
int main(){
	ios::sync_with_stdio(false);
  cin.tie(0);
	cout<<fixed<<setprecision(15);
	solve();
	return 0;
}