using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using Enu = System.Linq.Enumerable;

public class Program
{
    public void Solve()
    {
        int T = Reader.Int();
        for (int t = 0; t < T; t++)
        {
            int L1 = Reader.Int(), L2 = Reader.Int();
            int N = Reader.Int();
            var A = Reader.IntArray(N);
            Console.WriteLine(Calc(L1, L2, N, A));
        }
    }

    private int Calc(int L1, int L2, int N, int[] A)
    {
        Array.Sort(A);
        var dp = new int[L1 + 1];
        for (int i = 1; i < dp.Length; i++) dp[i] = -1;
        dp[L1] = L2;

        for (int i = 0; i < N; i++)
        {
            var nextdp = new int[dp.Length];
            for (int r = 0; r < nextdp.Length; r++) nextdp[r] = -1;

            bool any = false;
            for (int rem = 0; rem <= L1; rem++)
                if (dp[rem] >= 0)
                {
                    if (rem >= A[i])
                        any |= CheckMax(ref nextdp[rem - A[i]], dp[rem]);
                    if (dp[rem] >= A[i])
                        any |= CheckMax(ref nextdp[rem], dp[rem] - A[i]);
                }
            if (!any) return i;
            dp = nextdp;
        }

        return N;
    }

    bool CheckMax(ref int a, int b) { if (b > a) { a = b; return true; } return false; }

}


class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
    static TextReader reader = Console.In;
    static readonly char[] separator = { ' ' };
    static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
    static string[] A = new string[0];
    static int i;
    static void Init() { A = new string[0]; }
    public static void Set(TextReader r) { reader = r; Init(); }
    public static void Set(string file) { reader = new StreamReader(file); Init(); }
    public static bool HasNext() { return CheckNext(); }
    public static string String() { return Next(); }
    public static int Int() { return int.Parse(Next()); }
    public static long Long() { return long.Parse(Next()); }
    public static double Double() { return double.Parse(Next()); }
    public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
    public static int[] IntArray(int N) { return Range(N, Int); }
    public static int[][] IntTable(int H) { return Range(H, IntLine); }
    public static string[] StringArray(int N) { return Range(N, Next); }
    public static string[][] StringTable(int N) { return Range(N, () => Split(Line())); }
    public static string Line() { return reader.ReadLine().Trim(); }
    static T[] Range<T>(int N, Func<T> f) { return Enu.Range(0, N).Select(i => f()).ToArray(); }
    static string[] Split(string s) { return s.Split(separator, op); }
    static string Next() { CheckNext(); return A[i++]; }
    static bool CheckNext()
    {
        if (i < A.Length) return true;
        string line = reader.ReadLine();
        if (line == null) return false;
        if (line == "") return CheckNext();
        A = Split(line);
        i = 0;
        return true;
    }
}