#include "bits/stdc++.h"

using namespace std;
typedef long long int ll;
typedef pair<ll, ll > pi;  
typedef pair<pair<ll, ll >, ll > pii;  
vector<ll > vec;
vector<vector<ll > > vec2;
ll MOD = 1000000007;
ll INF = 1145141919454519;

int main(){

    ll T;
    cin >> T;

    for(ll i = 0; i < T; i++){
        ll a, b, c;
        cin >> a >> b >> c;
        
        if((b > a && b > c) || (b < a && b < c)){
            cout << 0 << endl;
        }else{
            if((a == 1 || c == 1)){
                if(abs(a-c) <= 2){
                    cout << -1 << endl;
                }else{
                    if(a==1){
                        cout << abs(b-c)+1 << endl;
                    }else{
                        cout << abs(b-a)+1 << endl;
                    }
                }
            }else{
                if(a == b && b == c && a == c){
                    cout << 3 << endl;
                }else{
                    cout << min(abs(a-b)+1, abs(c-b)+1) << endl;
                }
            }
        }
    }

}