#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    int t;
    cin>>t;
    while(t--){
        long long int l ,r, f;
        cin>>l>>r>>f;
        cout<<-1*(f-l-r)<<endl;
    }
    return 0;
}