#include<cstdio>
#include<cstdlib>
#include<time.h>
#include<cmath>
#include<cstring>
#include<string>
#include<iostream>
#include<queue>
#include<map>
#include<set>
#include<stack>
#include<vector>
#include<algorithm>
#define Size 105
#define inf 2e9
#define INF 2e18
#define LL long long
#define ULL unsigned long long
#define Mod 1000000007
using namespace std;
int n,m,k;

int main()
{
    #ifndef ONLINE_JUDGE
//        freopen("input.txt","r",stdin);
//        freopen("output.txt","w",stdout);
    #endif // ONLINE_JUDGE
    int t;
    int x,y,z;
    int a,b;
//    int Case=0;
    cin>>t;
    while(t--)
//    cin>>n;
//    while(scanf("%d",&n)==1)
    {
            scanf("%d%d",&a,&b);
            printf("%d\n",a/2+b/2);
    }
    return 0;
}