#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <math.h>
#include <complex>
#include <queue>
#include <deque>
#include <stack>
#include <map>
#include <unordered_map>
#include <set>
#include <bitset>
#include <functional>
#include <assert.h>
#define int long
#define ll long long
#define rng(i,a,b) for(int i=int(a);i<int(b);i++)
#define rep(i,b) rng(i,0,b)
#define gnr(i,a,b) for(int i=int(b)-1;i>=int(a);i--)
#define per(i,b) gnr(i,0,b)
#define eb emplace_back
#define all(x) x.begin(),x.end()
#define SZ(x) x.size()
#define fi first
#define se second
const int INF = 1e9;
using namespace std;

template<class t> using vc=vector<t>;
template<class t> using vvc=vc<vc<t>>;

using pi=pair<int,int>;
using vi=vc<int>;

template<class T>
inline bool chmax(T &a,T b){if(a<b){a=b;return true;}return false;}
template<class T>
inline bool chmin(T &a,T b){if(a>b){a=b;return true;}return false;}

signed main() {
    cin.tie(0);
    ios::sync_with_stdio(0);
    cout<<fixed<<setprecision(20);

    int N; cin >> N;
    rep(i,N){
        int A,B,C; cin >> A >> B >> C;
        if((min({A,B,C})==B || max({A,B,C})==B) && A!=B && B!=C && C!=A){
            cout << 0 << "\n";
        } else if(A==B && B==C){
            if(A<=2) cout << -1 << "\n";
            else cout << 3 << "\n";
        } else if(A!=B && B!=C && C!=A){
            int T[]={A,B,C};
            sort(T,T+3);
            if(T[0]>1)
                cout << min(T[2]-T[1]+1,T[1]-T[0]+1) << "\n";
            else if(T[1]==2){
                cout << -1 << "\n";
            } else {
                cout << T[2]-T[1]+1 << "\n";
            }
        } else if(A==B){
            if(A==C+1){
                if(C==1){
                    cout << -1 << "\n";
                } else {
                    cout << 2 << "\n";
                }
            }
            else {
                if(A==1) cout << -1 << "\n";
                else cout << 1 << "\n";
            }
        } else if(B==C){
            if(B==A+1) {
                if(A==1){
                    cout << -1 << "\n";
                } else {
                    cout << 2 << "\n";
                }
            }
            else {
                if(B==1) cout << -1 << "\n";
                else cout << 1 << "\n";
            }
        } else {
            if(A==B+1) {
                if(B==1){
                    cout << -1 << "\n";
                } else {
                    cout << 2 << "\n";
                }
            }
            else {
                if(A==1) cout << -1 << "\n";
                else cout << 1 << "\n";
            }
        }
    }
}