#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair < int, int > ii;

int main() {


	int T;
	cin >> T;

	while(T--)
    {
        int a,b,c;
        cin >> a >> b >> c;

        int d = c-a;
        cout << b - d << endl;
    }
	return 0;

}