#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <cstdlib>
#include <queue>
#include <stack>
#include <list>
#include <set>
#include <map>
#include <vector>
#define ll long long
#define INF 0x3f3f3f3f
using namespace std;
int main()
{
    int re;
    scanf("%d", &re);
    while(re--)
    {
        int n, m;
        scanf("%d%d", &n, &m);
        printf("%d\n", n / 2 + m / 2);
    }
 }