import java.io.*;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Solution {
    public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        int t=in.nextInt();
        for (int tt=0;tt<t;tt++){
            long b=in.nextLong();
            long s=in.nextLong();
            long c=in.nextLong();
            long diff=c-b-s;
            System.out.println(-diff);
        }
    }
}