codeforces 1196A

#include<bits/stdc++.h>
using namespace std;
int main()
{
          long long int t,a,b,c,avg;
          cin>>t;
          while(t--)
          {
                    cin>>a>>b>>c;
                    avg=(a+b+c)/2;
                    cout<<avg<<endl;
          }
}