#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#ifdef LOCAL
#include <debug_print.hpp>
#define debug(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#define debug(...) (static_cast<void>(0))
#endif

template <class T, class U>
T ceil(T x, U y) {
    return (x > 0 ? (x + y - 1) / y : x / y);
}
template <class T, class U>
T floor(T x, U y) {
    return (x > 0 ? x / y : (x - y + 1) / y);
}

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(20);
    int T;
    cin >> T;
    while (T--) {
        ll N, M;
        cin >> N >> M;
        ll ans = max(ceil(N, 4), ceil(N + M, 8));
        cout << ans << '\n';
    }
}