#include<stdio.h>
#include<string.h>
#include<math.h>
#include<stack> 
#include<queue>
#include<math.h>
#include<algorithm>
#define MAX 10010
#define INF 0x7ffff
#define MAXM 100100
#define LL long long
using namespace std;
int main()
{
    int n,m,j,i,t;
    scanf("%d",&t);
    while(t--)
    {
        scanf("%d%d",&n,&m);
        int x=n/2+m/2;
        printf("%d\n",x);
    }
    return 0;
}