#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 t,n,m,k;
	scanf("%d",&t);
	while(t--)
	{
		scanf("%d%d",&n,&m);
		k=n/2+m/2;
		printf("%d\n",k);
	}
	return 0;
}