#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <string>
#include <cmath>
#include <algorithm>
#define N 1010
using namespace std;

int main()
{
    int n, m, t;
    cin >> t;
    while(t--)
    {
        cin >> n >> m;
         cout << n/2+m/2 << endl; 
    }    

    return 0;
}