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

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 = INT_MAX;
        cin >> a >> b >> c;
        if (a > c) swap(a,c);
        if (a == 1 && b == 2) a = b = c = 0;
        {
            int tmp = abs(c - b) + 1;
            if (b - a <= 1) tmp++;
            ans = tmp;
        }
        {
            int tmp = abs(b-a) + 1;
            ans = min(ans, tmp);
        }
        if (a == b && b == c) ans = 3;
        if ((a<b&&c<b) || (a>b&&c>b)) ans = 0;

        if (a<=0 || b<=0 || c<=0) ans = -1;
        cout << ans << endl;
    }
}