#include <iostream>
#include <iomanip>
#include <vector>
#include <utility>
#include <map>
#include <algorithm>
#include <queue>
#include <cmath>
#include <numeric>

using namespace std;
struct aaa{aaa(){cin.tie(nullptr); ios::sync_with_stdio(false); cout<<fixed<<setprecision(20);};}aaa;

typedef long long int64;


int main() {
    int t;
    cin >> t;
    for (int i=0; i<t; i++) {
        int a,b,c;
        int ans = 0;
        cin >> a >> b >> c;
        if (a > c) swap(a,c);
        if (a==b && b==c) ans = 2;
        else if (a<=b && b<c) {
            if (a == 1) {
                ans = a = -1;
            } else {
                ans += min(abs(a - b), abs(b - c)) + 1;
            }
        }

        if (a == c) ans++;

        cout << ans << endl;
    }
}