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


int main() {
    int t;
    cin>>t;
    for (int j=1; j<=t; j++)
    {
        int l,r,d;
        cin>>l>>r>>d;
        cout<<abs(d-r-l)<<"\n";
    }
    return 0;
}