#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<cmath>
#include<vector>
using namespace std;
const int INF=0x3f3f3f3f;
#define mem(x,y) memset(x,y,sizeof(x))
#define SI(x) scanf("%d",&x)
#define PI(x) printf("%d",x)
#define SD(x,y) scanf("%lf%lf",&x,&y)
#define P_ printf(" ")
const int MAXN=1010;
typedef long long LL;
int main(){
    int T,N,M;
    SI(T);
    while(T--){
        SI(N);
        SI(M);
        printf("%d\n",N/2+M/2);
    }
    return 0;
}