import java.io.*;
import java.util.*;


public class Main_yukicoder393 {

    public static void main(String[] args) {
    	Scanner sc = new Scanner(System.in);
    	Printer pr = new Printer(System.out);

    	int d = sc.nextInt();

    	for (int tcase = 0; tcase < d; tcase++) {
    		int n1 = sc.nextInt();
    		int n2 = sc.nextInt();
    		int n = n1 + n2;
    		n1 = Math.min(n1, n2);

    		int m = sc.nextInt();
    		int[] a = new int[m];
    		for (int i = 0; i < m; i++) {
    			a[i] = sc.nextInt();
    		}
    		Arrays.sort(a);

    		int[] sum = new int[m + 1];
    		for (int i = 1; i <= m; i++) {
    			sum[i] = sum[i - 1] + a[i - 1];
    		}

    		int tmp = Arrays.binarySearch(sum, n);
    		int ret = tmp >= 0 ? tmp : -(tmp + 1) - 1;
    		int ok = n1 - (n - sum[ret]);

    		BitSet bs = new BitSet(n1 + 1);
    		bs.set(0);
    		for (int i = 0; i < ret; i++) {
    			for (int j = bs.length(); (j = bs.previousSetBit(j - 1)) >= 0; ) {
    				if (j + a[i] > n1) {
    					continue;
    				} else {
    					bs.set(j + a[i]);
    				}

    			}
    		}

    		if (bs.previousSetBit(bs.length() - 1) >= ok) {
    			pr.println(ret);
    		} else {
    			pr.println(ret - 1);
    		}
    	}

		sc.close();
        pr.close();
    }

	@SuppressWarnings("unused")
	private static class Scanner {
		BufferedReader br;
		Iterator<String> it;

		Scanner (InputStream in) {
			br = new BufferedReader(new InputStreamReader(in));
		}

		String next() throws RuntimeException  {
			try {
				if (it == null || !it.hasNext()) {
					it = Arrays.asList(br.readLine().split(" ")).iterator();
				}
				return it.next();
			} catch (IOException e) {
				throw new IllegalStateException();
			}
		}

		int nextInt() throws RuntimeException {
			return Integer.parseInt(next());
		}

		long nextLong() throws RuntimeException {
			return Long.parseLong(next());
		}

		float nextFloat() throws RuntimeException {
			return Float.parseFloat(next());
		}

		double nextDouble() throws RuntimeException {
			return Double.parseDouble(next());
		}

		void close() {
			try {
				br.close();
			} catch (IOException e) {
//				throw new IllegalStateException();
			}
		}
	}

	private static class Printer extends PrintWriter {
		Printer(PrintStream out) {
			super(out);
		}
	}
}