#include <iostream>
#include <string>
#include <algorithm>
#include <functional>
#include <vector>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <tuple>
#include <cstdio>
#include <cmath>
#include <cassert>
#define rep(i, n) for(i = 0; i < n; i++)
#define int long long
using namespace std;

signed main() {
    int T;
    cin >> T;
    while (T--) {
        int n, m;
        cin >> n >> m;
        cout << max((n + 3) / 4, (n + m + 7) / 8) << endl;
    }
    return 0;
}