import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class JavaApplication1{

    static int profit(int b, int s, int c) {
        // Return the fixed profit.
        int small=b<=s?b:s;
 small=small<=s?small:s;
 int ans=0;
 for(int i=0;i<small;i++)
 {
     if(((b-i)+(s-i))==(c-i))
     {
         ans=i;
         break;
     }
     
 }
 
 return ans;
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int t = in.nextInt();
        for(int a0 = 0; a0 < t; a0++){
            int b = in.nextInt();
            int s = in.nextInt();
            int c = in.nextInt();
            int result = profit(b, s, c);
            System.out.println(result);
        }
        in.close();
    }
}