// Problem: E. Binary Wine
// Contest: Codeforces - Codeforces Round 1064 (Div. 2)
// URL: https://codeforces.com/contest/2166/problem/E
// Memory Limit: 512 MB
// Time Limit: 2000 ms
//
// Powered by CP Editor (https://cpeditor.org)

#include <assert.h>
#include <bits/stdc++.h>
using namespace std;
#ifndef __DEBUG__
#define dbg(...) 42
#endif
template <class T> using mpq = priority_queue<T, vector<T>, greater<T>>;

namespace rngs = std::ranges;
using ll = long long;
using a2l = array<ll, 2>;
using vl = vector<ll>;

void solve()
{
    ll n, q;
    cin >> n >> q;
    vl a(n);
    for (auto &x : a)
        cin >> x;
    priority_queue<a2l> pq;
    for (auto x : a)
        pq.push({x, 1});
    // priority_queue<ll> pq(a.begin(), a.end());
    multiset<ll> add;
    multiset<a2l> del;
    for (ll i = 0, c; i < q; ++i) {
        cin >> c;
        for (auto x : add)
            pq.push({x, 1});
        add.clear();
        dbg(c);
        bool done = false;
        ll cost = 0;
        for (ll j = 30; j >= 0 && !done; --j) {
            auto [val, ori] = pq.top();

            while (del.contains({val, ori})) {
                pq.pop();
                del.extract({val, ori});
                std::tie(val, ori) = pq.top();
                // val = pq.top()[0], ori = pq.top()[1];
            }

            if (c <= val) {
                done = true;
                cout << cost << '\n';
                break;
            }
            ll b = (c >> j) % 2;
            if (b) {
                ll tg = 1ll << j;
                dbg(cost, tg, val);
                ll dc = 0;
                del.insert({val, ori});

                if (tg >= val) {
                    dc = tg - val;
                    pq.push({0, 0});
                    if (ori)
                        add.insert(val);
                } else {
                    dc = 0;
                    pq.push({min(tg - 1, val - tg), 0});
                    if (ori)
                        add.insert(val);
                }
                dbg(tg, val, dc);
                cost += dc;
                c -= tg;
            }
        }
        if (!done)
            cout << cost << '\n';
    }
}

int main(int argc, char **argv)
{
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);

    ll t = 1;
    cin >> t;
    while (t--)
        solve();

    return 0;
};