#include <bits/stdc++.h>

using namespace std;

using ll = long long;

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int t;
    cin >> t;
    for (int lo = 0; lo < t; ++lo) {
        vector<ll> a(3);
        for (int i = 0; i < 3; ++i) {
            cin >> a[i];
        }

        if (a[0] == a[1] && a[1] == a[2]) {
            if (a[1] <= 2) {
                cout << -1 << "\n";
            } else {
                cout << 3 << "\n";
            }
            continue;
        }

        if (a[2] < a[0]) swap(a[0], a[2]);

        ll cnt = 0;
        if (a[0] == a[2]) {
            a[0]--;
            cnt++;
        }
        if (a[0] == 0) {
            cout << -1 << "\n";
            continue;
        }

        if (a[1] == a[0]) {
            if (a[1] <= 1) cout << -1 << "\n";
            else cout << cnt + 1 << "\n";
            continue;
        }

        if (a[2] == a[1]) {
            if (a[2] <= 1) cout << -1 << "\n";
            else cout << cnt + 1 << "\n";
            continue;
        }

        if (a[2] < a[1] || a[0] > a[1]) {
            cout << cnt << "\n";
        } else if (a[0] == 1) {
            cout << -1 << "\n";
        } else {
            cout << cnt + a[1] - min(a[0], a[2]) + 1 << "\n";
        }
    }

    return 0;
}