/*
export PATH=/usr/local/gcc-7.1/bin:$PATH
g++-7.1 test.cpp -o test
./test
*/

#include <bits/stdc++.h>
using namespace std;

#define MAX

int main ()
{
    // ios_base::sync_with_stdio(false);
    // cin.tie(NULL);   
    int a,b,c,test;
    cin>>test;
    while(test--){
        cin>>a>>b>>c;
        int mini=min(a,b);
        int ans=0;
        for(int i=1;i<=mini;i++){
            if(a-i+b-i == c-i){
                ans=i;
                break;
            }
        }
        cout<<ans<<endl;
    }

    return 0;
}