#include <set>
#include <map>
#include <queue>
#include <ctime>
#include <cmath>
#include <cstdio>
#include <vector>
#include <string>
#include <cctype>
#include <bitset>
#include <cstring>
#include <cstdlib>
#include <utility>
#include <iostream>
#include <algorithm>
#define lowbit(x) (x)&(-x)
#define REP(i,a,b) for(int i=(a);i<=(b);i++)
#define PER(i,a,b) for(int i=(a);i>=(b);i--)
#define RVC(i,S) for(int i=0;i<(S).size();i++)
#define RAL(i,u) for(int i=fr[u];i!=-1;i=e[i].next)
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;

template<class T> inline
void read(T& num) {
    bool start = false, neg = false;
    char c;
    num = 0;
    while ((c = getchar()) != EOF) {
        if (c == '-') start = neg = true;
        else if (c >= '0' && c <= '9') {
            start = true;
            num = num * 10 + c - '0';
        } else if (start) break;
    }
    if (neg) num = -num;
}

/*-------- Header File --------*/

int main() {
    int T; read(T);
    while (T--) {
        int n, m;
        read(n);
        read(m);
        printf("%d\n", n / 2 + m / 2);
    }
    return 0;
}