#include <iostream>
#include <stdio.h>
#include <string.h>
#include <string>
#include <queue>
#include <stack>
#include <vector>
#include <math.h>
#include <map>
#include <stdlib.h>
#include <algorithm>

#define eps 1e-5
#define inf 0x3f3f3f3f
#define max(a,b) ((a)>(b)?(a):(b))
#define min(a,b)  ((a)<(b)?(a):(b))
#define lson l,m,rt<<1
#define rson m+1,r,rt<<1 | 1
#define lc rt<<1
#define rc rt<<1 | 1
#define getx2(a)  ((a)*(a))
#define Pi acos(-1.0)
#define N 100010

typedef long long LL;
using namespace std;
int main()
{
    int t,n,m;
    scanf("%d",&t);
    while(t--)
    {
        scanf("%d%d",&n,&m);
        printf("%d\n",(n/2+m/2));
    }
    return 0;
}